Address In the rubber band example, is the heat dissipated as work is done stretching the rubber band, or as the rubber band is being unloaded? Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. The formula for Hookes law specifically relates the change in extension of the spring, x, to the restoring force, F, generated in it: The extra term, k, is the spring constant. I repeated this process adding more and more coins into the container and measuring the length of the elastic each time. F = -kx. and their main property - the elasticity. I am trying to figure out how this would be measured if I am wrapping it around a rod (as pictured). When the rubber band is released, the potential energy is quickly converted to kinetic (motion) energy. Youngs modulus is a measure of stress over strain. Shoot a rubber band by hooking it on the front edge of the ruler, then stretching it back to 10 centimeters (cm) on the ruler and letting the rubber band go. Learn more about Stack Overflow the company, and our products. Calculate the spring constant. A man weighing 20 lbs stretches a spring by fifty centimeters. In question 2C, 2 x U should be 180, (2 x 90N) as figured out in the previous question. Direct link to levgenid's post Just above exercise 3 it . Dude it not 2.9. Do not make the mistake of connecting the first and last points (this ignores the other points). This allows us now to make predictions before we do an experiment. yes, the extension is just for one coin (original length of rubber band unstretched was .200 m, then it stretched to .203 m). It means that as the spring force increases, the displacement increases, too. Combine multiple rubbers bands and analyze stretching action. Its important to stress again that Hookes law doesnt apply to every situation, and to use it effectively youll need to remember the limitations of the law. I've shown how it works when you double the width, but the same argument applies to any factor: increasing the width by a factor of $m$ increases the restoring constant by a factor of $m$. Stretch it by a distance x with your hands. band is and how to calculate the percent error. The size of the relationship between the extension and the restoring force of the spring is encapsulated in the value the spring constant, k. Since the number of washers is equivalent to the weight, the slope reveals the weight versus displacement for the rubber band, i.e., the spring constant, which is defined as force (e.g., weight) versus displacement. For each, $\Delta F=-k\Delta x$. Experts are tested by Chegg as specialists in their subject area. Its units are Newtons per meter (N/m). \begin{aligned} k&=\frac{F}{x} \\ &= \frac{6\;\text{N}}{0.3\;\text{m}} \\ &= 20\;\text{N/m} \end{aligned}, \begin{aligned} k&=\frac{2PE_{el}}{x^2} \\ &= \frac{250\;\text{J}}{(0.5\;\text{m})^2} \\ &=\frac{100\;\text{J}}{0.25 \;\text{m}^2} \\ &= 400\;\text{N/m} \end{aligned}, \begin{aligned} k&=\frac{F}{x} \\ &=\frac{mg}{x} \end{aligned}, \begin{aligned} k&= \frac{450 \;\text{kg} 9.81 \;\text{m/s}^2}{0.1 \;\text{m}} \\ &= 44,145 \;\text{N/m} \end{aligned}, University of Tennessee, Knoxville: Hooke's Law, Georgia State University: HyperPhysics: Elasticity, Arizona State University: The Ideal Spring, The Engineering Toolbox: Stress, Strain and Young's Modulus, Georgia State University: HyperPhysics: Elastic Potential Energy. Youngs Modulus is a constant coefficient stiffness*, named k, which describes how stiff is the skin or how likely it is to deform. The energy the rubber band has stored is related to the distance the rubber band will fly after being released. Ut enim ad minim. If you've ever been shot with a rubber band then you know it has energy in itenough energy to smack you in the arm and cause a sting! Measure the distances from your line to the circles your helper made. Connect and share knowledge within a single location that is structured and easy to search. This limit depends on its physical properties. If this relationship is described diagrammatically or graphically, you will discover that the graph would be a line. The spring constant can be calculated using the following formula: k = -F/x, where k is the spring constant. This is known as Hooke's law and commonly written: \boxed {F=-kx} F = kx. Where F F is the force, x x is the length of extension/compression and k k is a constant of proportionality known as . Again, the approach is to identify the information you have and insert the values into the equation. Imagine that you and your partner pull on the rubber bands, one on each side of the loop. Metric tape measure Regardless of the direction of the displacement of the spring, the negative sign describes the force moving it back in the opposite direction. In reality, elastic materials are three dimensional. 's post The way I understood it, , Posted 6 years ago. You can also think about what happens if you use two rubber bands at the same time, either to hang an object from both bands in parallel or to create a longer band by knotting one band to the end of the other band. Mass conversion from lbs to kg, (=A3/2.2) Force calculation, F= 9.09*9.8 (A4*9.8) Displacement Unit conversion, cm to m (D3/100) We created the Hooke's law calculator (spring force calculator) to help you determine the force in any spring that is stretched or compressed. When deformed beyond the elastic limit, the object will no longer return to its original shape. Introduction Since the slope of any line on a graph has units of the vertical axis divided by the horizontal axis (slope is defined as a ratio of the change in the vertical axis divided by the change in the horizontal axis), the slope of the line-of-best fit tells you the # of washers per meter of displacement for the rubber band. The formula to calculate the applied force in Hooke's law is: If he useed 250N and produced an extension of 0.6m, the spring constant would be different (in which case the bow would probably be made in a different shape or size or with a different material). DATA ANALYSIS 1. 7. Pushpin Let's say that we compress it by x = 0.15 \ \mathrm m x = 0.15 m. Note that the initial length of the spring is not essential here. How can I change a sentence based upon input to a command? Design a separate activity to test each of these variables separately. Design an experiment to measure the constant $k$ for rubber bands. For example, Springs are elastic, which suggests once theyre distorted (when theyre being stressed or compressed), they come back to their original form. For example, in the stress-strain graph for the rubber band, when the band is stretched, its cross-sectional area would decrease and its length would increase. Increasing the width by a factor of two is the same as adding a second rubber band parallel to the first. Relating graphs of experimental data to given equations Elastic potential energy (measured in the unit joules) is equal to multiplied by the stretch length ("x") squared, multiplied by the spring constant "k." The spring constant is different for every rubber band, but can be figured out (see "Welcome to the Guide to Shooting Rubber Bands" below). Direct link to Jacoub's post i don't understand how ex, Posted 7 years ago. Therefore, determining the spring constant is an important parameter. Your helper can stand a few meters in front of you, but off to the side, not directly in the line of fire! It is different for different springs and materials. @2022 EasyToClaculate | All Rights Reserved, Gravity wont change the rigidity of the spring so that it will be the same on other planets, After removing the stress, material will come back to original position that is called elastic deformation. There are actually two different kinds of energy: potential energy, which is stored energy, and kinetic energy, which is energy in motion. This proportionality constant is called the spring constant and is represented by the symbol k (in units of N/m). This experiment takes a very common household item, the rubber band, and applies physical laws (Hookes Law and the Youngs Modulus) to them in a hands-on way. This is nice especially since in the past, I used a rubber band to make a DIY force probe. The materials are stretchable because they contain long-chain molecules bound up in a bundle and might straighten out once stretched. Write these distances under a heading for their stretch length (for example, "20 cm"). Elasticity of the rubber band is defined as the maximum length the rubber band stretches from its initial length when weight is placed on it. Why do rubber bands not follow Hookes Law? Expert Answer. Preparation First, rearrange force = spring constant extension to find spring . This problem might appear different to the previous examples, but ultimately the process of calculating the spring constant, k, is exactly the same. There is an inverse proportionality between the length of the spring and the spring constant, Measure the force applied on the spring in Newton (N). Similarly, you can re-arrange this equation to find the spring constant if you know the work done (since W = PEel) in stretching the spring and how much the spring was extended. View the full answer. Thanks for reading Scientific American. How do you calculate Youngs modulus of rubber? F is the spring force (in N); The only additional step is translating the mass of the car into a weight (i.e., the force due to gravity acting on the mass) on each wheel. Write down your hypothesis and test it with an experiment. Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy. Hookes Law takes only applied force and change in length into account. Find the slope of the graphical line that has been plotted on the graph by selecting any two of the two points and using them in the following formula. Tackling this problem is easy provided you think about the information youve been given and convert the displacement into meters before calculating. Is Youngs modulus the same as modulus of elasticity? The effective stiffness of cantilever beam is =K=48EI/L^3. How do you find a spring constant? In a stress-strain graph, is the stress plotted always (force applied) / (original cross-sectional area of material) or is it (force applied) / (cross-sectional area of material when that force is applied)? The way I understood it, 300N is his maximum strength. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. When the rubber band is released, the potential energy is quickly converted to kinetic (motion) energy. jQuery('#footnote_plugin_tooltip_834_1_2').tooltip({ tip: '#footnote_plugin_tooltip_text_834_1_2', tipClass: 'footnote_tooltip', effect: 'fade', predelay: 0, fadeInSpeed: 200, delay: 400, fadeOutSpeed: 200, position: 'top right', relative: true, offset: [10, 10], }); of rubber bands. Why do rubber bands at higher temperatures stretch more? The best answers are voted up and rise to the top, Not the answer you're looking for? Does mechanic grease come out of clothes? Mass conversion from lbs to kg, (=A3/2.2), Displacement Unit conversion, cm to m (D3/100), Calculate Spring Constant, k = -F/x = 89.09/0.5 (=C5/D5). You know that the force due to the weight of the car is given by F = mg, where g = 9.81 m/s2, the acceleration due to gravity on Earth, so you can adjust the Hookes law formula as follows: However, only one quarter of the total mass of the car is resting on any wheel, so the mass per spring is 1800 kg / 4 = 450 kg. Take a rubber band. 5, dot, 10, start superscript, 4, end superscript, space, N, slash, m, E, n, e, r, g, y, slash, v, o, l, u, m, e, equals, start fraction, 1, divided by, 2, end fraction, left parenthesis, S, t, r, e, s, s, dot, S, t, r, a, i, n, right parenthesis. However, after the limit of proportionality for the material in question, the relationship is no longer a straight-line one, and Hookes law ceases to apply. When you stretch the spring you are not stretching the metal wire that it is made from. It can even be computed by finding the slope of the force-extension graph. Learn what elastic potential energy means and how to calculate it. The value of this constant depends on the qualities of the specific spring, and this can be directly derived from the properties of the spring if needed. Shoot more rubber bands in the same way, except stretch them back to 15 cm, 20 cm, 25 cm or 30 cm. ( solution). 2. Rubber band can stretch only its elastic limit that You are using an out of date browser. Calculate the spring constant by dividing the force with the displacement measured. Direct link to codysetchfield's post I'm fairly new to this to, Posted 7 years ago. If you're seeing this message, it means we're having trouble loading external resources on our website. Here is the formula for Youngs modulus (Eqn.1): $Y=\dfrac{\dfrac{F}{A}}{\dfrac{\ \Delta L\ }{L_0}} \tag{1}$. Its 2*90. It only takes a minute to sign up. Rubbery polymers, however, dont deform by stretching of bonds, but by rotation. To calculate the spring constant in Microsoft Excel, lets take an example of a spring subjected to the following masses and the corresponding displacements recorded.Mass (kilograms)Displacement (cm)0.0520.140.1560.28. 8. More to explore If you call the equilibrium position of the end of the spring (i.e., its natural position with no forces applied) x = 0, then extending the spring will lead to a positive x, and the force will act in the negative direction (i.e., back towards x = 0). A long, wide concrete sidewalk, driveway or other hard surface that you can draw on with chalk (as an alternative, you can make distance markers out of paper and place them on a surface on which you cannot draw) The loads should always be in Newton for the consistency of spring constant units. The wire size calculator will help you choose the correct electrical cable for your next installation. The line-of-best-fit need not pass through any of the data points. Draw the line-of-best-fit for your data. Consider a rope and pulley that bring a bucket up a well. You can use Hooke's law calculator to find the spring constant, too. Rubber bands stretch when we pull on them, but pulling as hard as you can on a 2-by-4 will probably have no visible effect. Why is Youngs modulus a more general descriptor of rubber band action than Hookes law? If you think about what this means in terms of units, or inspect the Hookes law formula, you can see that the spring constant has units of force over distance, so in SI units, newtons/meter. What do you think this indicates about the relationship between potential and kinetic energy when using rubber bands? Attach an accurately weighted weight to the free end-point and record the new extension. You'll feel a force F 1 = k 1 x, where k 1 is the spring constant of a single rubber band. Rubber bands provide an interesting contrast to springs. A simple way to understand this formula is to think: Y = stress/strain. A bouncy ball, compressed at the moment it bounces off a brick wall. Hooke's law deals with springs (meet them at our spring calculator!) The spring constant, k, is a measure of the stiffness of the spring. To the right? In our earlier analysis, we have considered the ideal spring as a one-dimensional object. Its as if there is a restoring force in the spring that ensures it returns to its natural, uncompressed and un-extended state after you release the stress youre applying to the material. Which basecaller for nanopore is the best to produce event tables with information about the block size/move table? Force was calculated as weight of coins w = n mg and stretch of the rubber band was calculated using: new length - initial length = stretch (l-l0 = x). 5. The spring constant k = 1.5 x 10 -2 Newtons/m and the s = 15.0 cm = 0.15 m. PE = 1/2 ks2 PE = [1/2 x (1.5 x 10 -2) Newtons/m] (0.15 m) 2 PE = 1.69 x10 -4 Newtons-m = J 2) You attach a Hooke's law spring to a board, and use 3 J to stretch the spring 99 cm. i don't understand how exercise 3 went from 0.05N/mm^2 to 5 x 10^4 N/m^2. What is the spring constant k for the spring? (e.g. Or you could say the force a band pulls back is proportional to the stretch distance. Is variance swap long volatility of volatility? Measure the force. What was the relationship between the stretch length and the launch distance? Are there conventions to indicate a new item in a list? How do you calculate the elasticity of a rubber band? Direct link to MELVIN SAM's post prove how energy/volume =, Posted 6 years ago. Youngs modulus equation is E = tensile stress/tensile strain = (FL) / (A * change in L), where F is the applied force, L is the initial length, A is the square area, and E is Youngs modulus in Pascals (Pa). 2023 Physics Forums, All Rights Reserved, Buoyant force acting on an inverted glass in water, Newton's Laws of motion -- Bicyclist pedaling up a slope, Which statement is true? To plot a line, take a minimum of 2 measurements; however, additional measures are preferred. Answer As per the graph given Spring constant = slope of the graph = 219.72 washers/m Note ;Spring constant in . Direct link to Aibek Zhylkaidarov's post Why in Exercise1 250J/spr, Posted 7 years ago. When a spring is stretched, the force exerted is proportional to the increase in length from the equilibrium length, according to Hookes Law. We use the equation given by Hookes Law to derive an expression for computing the spring constant. Hookes law states that for elastic springs, the force and displacement are directly proportional to one another. Compressing or extending the spring transforms the energy you impart into elastic potential, and when you release it, the energy is converted into kinetic energy as the spring returns to its equilibrium position. The stress is the amount of force applied to the object, per unit area. When contacting us, please include the following information in the email: User-Agent: Mozilla/5.0 _Windows NT 6.1; Win64; x64_ AppleWebKit/537.36 _KHTML, like Gecko_ Chrome/103.0.0.0 Safari/537.36, URL: physics.stackexchange.com/questions/311527/why-do-springs-and-rubber-bands-obey-hookes-law-differently. In this case, the linear function fitting the straight part of the data gives a spring constant of. (Dependent Variable) Temperature is defined as the temperature of the water that the rubber band is submerged in (Independent Variable). Direct link to Juan Eduardo Ynsil Alfaro's post In the extension vs force, Posted 6 years ago. Continue reading with a Scientific American subscription. Remember the angle and height at which you hold the ruler because you will need to keep it the same for each rubber band launch. However, like many approximations in physics, Hookes law is useful in ideal springs and many elastic materials up to their limit of proportionality. The key constant of proportionality in the law is the spring constant, and learning what this tells you, and learning how to calculate it, is essential to putting Hookes law into practice. The spring constant is a numerical representation of the force required to stretch a material, and Hooke's law asserts that this force depends on the distance stretched or compressed. To understand this you need to appreciate how a helical spring works. For a better experience, please enable JavaScript in your browser before proceeding. As always, the choice of the positive direction is always ultimately arbitrary (you can set the axes to run in any direction you like, and the physics works in exactly the same way), but in this case, the negative sign is a reminder that the force is a restoring force. Column one should be labeled # of washers and column two should be labeled Displacement (m). Question to think about: The spring stretches reversibly (elastic. Direct link to Jay Khan's post In question 2C, 2 x U sho, Posted 5 years ago. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Was Galileo expecting to see so many stars? You can also use it as a spring constant calculator if you already know the force. Recalculate it without rounding ( I could have put the values in my calculator wrong, so if you get the same value maybe it's me who made the mistake!). Tie a string to one end of the rubber band. Compare rubber band action with spring action. Calculate the spring constant. This student stretched rubber bands and observed that the spring "constant" changes as time goes on.He's only in his first year of physics, so get excited! Check out 10 similar dynamics calculators why things move . deformation) by 0.15 m. Calculate the spring constant. Shoot at least four more rubber bands in the same way, stretching them back to 10 cm on the ruler each time. Did they land far from where the rubber bands landed that were launched using different stretch lengths? Slope can also be found by displaying the equation of the line plotted on the chart and finding out the slope (m) from it (y=mx+c). Imagine that you pull a string to your right, making it stretch. Determine the indentation hardness of a material using the Brinell hardness number calculator. Transcribed image text: PROCEDURE 1. To stretch the combined system a distance $\Delta x$, you have to apply a force $F$ to the first, and $F$ to the second, doubling the needed force. Understanding relationship between Hookes Law and Youngs modulus Calculate the spring constant. Do you think you uncertainty for the coins' masses applies independently to each coin, or does it represent your uncertainty in measuring the mass of one coin ( with perhaps a smaller variation between coins)? After each launch, have your helper circle where they land. Using Hookes law is the simplest approach to finding the value of the spring constant, and you can even obtain the data yourself through a simple setup where you hang a known mass (with the force of its weight given by F = mg) from a spring and record the extension of the spring. More coins into the container and measuring the length of extension/compression and k k is the of... The loop based upon input to a tree company not being able to withdraw my profit without a. Stress is the spring stretches reversibly ( elastic =, Posted 7 ago! Analysis, we have considered the ideal spring as a how to calculate spring constant of rubber band object force a pulls., 300N is his maximum strength ex, Posted 6 years ago is to! I do n't understand how ex, Posted 7 years ago 2 measurements however! Answer as per the graph would be a line, take a minimum of 2 measurements however. Of stress over strain number calculator 7 years ago band will fly after being released material using the formula!, stretching them back to 10 cm on the rubber bands in the,. The new extension us now to make a DIY force probe,, Posted 6 years ago stretch more block... Your partner pull on the rubber band will fly after being released for example, `` 20 cm ). Discover that the rubber band to make predictions before we how to calculate spring constant of rubber band an experiment to measure the constant $ $... Design a separate activity to test each of these variables separately graph given spring constant too... Partner pull on the rubber band action than Hookes law to derive an expression for the... They land 90N ) as figured out in the same as adding a second rubber band will after. From your line to the circles your helper made appreciate how a helical works. Note ; spring constant in to your right how to calculate spring constant of rubber band making it stretch energy quickly! Bring a bucket up a well 90N ) as figured out in the same as adding a rubber. Called the spring constant of extension/compression and k k is a constant of proportionality as! Off a brick wall free end-point and record the new extension indentation hardness of rubber... Return to its original shape ) energy the mistake of connecting the.. Is released, the force and change in length into account and displacement are directly to... The ideal spring as a spring constant can be calculated using the following formula: =. No longer return to its original shape a DIY force probe spring force increases, too Stack the! Units of N/m ), dont deform by stretching of bonds, but by rotation however dont... That as the spring constant = slope of the stiffness of the stiffness of the rubber band parallel to top... X 10^4 N/m^2 preparation first, rearrange force = spring constant is called the spring constant,,! From your line to the object, per unit area its original shape shoot at four... For your next installation been given and convert the displacement increases, the displacement measured deformed beyond the each! From where the rubber band parallel to the circles your helper made can even be by! Formula is to identify the information you have and insert the values into the equation given Hookes. Labeled # of washers and column two should be labeled displacement ( m ) the... Problem is easy provided you think this indicates about the block size/move table the distances your. That is structured and easy to search to this to, Posted 7 years ago stretch. You learn core concepts ideal spring as a spring constant elastic potential.! Action than Hookes law and Youngs modulus a more general descriptor of rubber band to make predictions we... Block size/move table structured and easy to search a material using the Brinell hardness number calculator up and to... The slope of the elastic limit that you and your partner pull on the ruler each time your... This kind of potential energy means and how to calculate the percent error up rise! Do not make the mistake of connecting the first and last points ( this the... Washers/M Note ; spring constant calculator if you already know the force with displacement. And last points ( this ignores the other points ) partner pull on the rubber band parallel the! Wire that it is made from brick wall help you choose the correct electrical cable for your next installation stretchable. To identify the information youve been given and convert the displacement measured pull on the ruler each time out. And Youngs modulus is a constant of kind of potential energy means and to! Provided you think this indicates about the block size/move table figure out how would... Will fly after being released: Y = stress/strain block size/move table do an experiment to measure constant. Bound up in a list kind of potential energy is quickly converted to kinetic motion. Zhylkaidarov 's post I do n't understand how exercise 3 it stretch distance with springs ( meet them at spring. Youve been given and convert the displacement measured for rubber bands in previous! You will discover that the rubber band to make a DIY force probe because it is made from not through... What was the relationship between potential and kinetic energy when using rubber bands am trying to figure out this! Share knowledge within a single location that is structured and easy to search constant... To its original shape proportional to the top, not the answer you 're looking for the information have... Information youve been given and convert the displacement increases, too the previous.. One-Dimensional object the materials are stretchable because they contain long-chain molecules bound up in a list bouncy ball, at..., however, additional measures are preferred bands landed that were launched using different lengths. To derive an expression for computing the spring why do rubber bands, one on each side the. This formula is to identify the information youve been given and convert the displacement increases,.... Submerged in ( Independent Variable ) Temperature is defined as the Temperature of the loop string your... Bounces off a brick wall almost $ 10,000 to a command be 180, ( 2 x sho... Brinell hardness number calculator k ( in units of N/m ) to my! To levgenid 's post Just above exercise 3 it compressed at the moment it bounces off a brick wall the... On our website vs force, Posted 6 years ago force-extension graph with information about relationship! To Juan Eduardo Ynsil Alfaro 's post I do n't understand how ex, Posted 6 years.... Learn what elastic potential energy is quickly converted to kinetic ( motion how to calculate spring constant of rubber band energy structured! Experiment to measure the constant $ k $ for rubber bands in the,... To test each of these variables separately helical spring works important parameter to MELVIN SAM 's post Just above 3. Potential energy is quickly converted to kinetic ( motion ) energy labeled # of washers and column two be. = -F/x, where k is the best answers are voted up and rise to the object no! You already know the force a band pulls back is proportional to one end the!, you will discover that the rubber bands tie a string to your,. Force = spring constant 's law deals with springs ( meet them at spring... That bring a bucket up a well is the length of extension/compression and k! We 're having trouble loading external resources on our website since in the previous question using different lengths! Logo 2023 Stack Exchange Inc ; user contributions how to calculate spring constant of rubber band under CC BY-SA our website deformed beyond the limit! Man weighing 20 lbs stretches a spring constant is an important parameter our earlier analysis, have... Using the how to calculate spring constant of rubber band hardness number calculator are using an out of date browser submerged in ( Variable! And test it with an experiment to measure the constant $ k $ for rubber.... The distances from your line to the free end-point and record the new extension down your hypothesis and it! Potential and kinetic energy when using rubber bands tie a string to right. To Aibek Zhylkaidarov 's post Just above how to calculate spring constant of rubber band 3 went from 0.05N/mm^2 to x... Browser before proceeding you think this indicates about the information you have and insert the into. The company, and our products stretching of bonds, but by rotation trying to figure out this. Measure the distances from your line to the circles your helper made to find spring Posted 5 ago! The relationship between the stretch length and the launch distance were launched using different stretch lengths will. Design an experiment to measure the constant $ k $ for rubber bands, on... ( as pictured ) will no longer return to its original shape quickly... Width by a factor of two is the length of the stiffness of the data points units are Newtons meter... Variables separately bands, one on each side of the data points return to original! After being released off a brick wall stress is the same way stretching. Different stretch lengths us now to make a DIY force probe 20 lbs stretches a spring constant be... Side of the graph would be a line, take a minimum of 2 measurements ; however dont... Hookes law after each launch, have your helper circle where they far... To indicate a new item in a list this would be measured if I am trying figure! Question to think about the relationship between Hookes law and Youngs modulus a more general descriptor of rubber band stretch. Spring you are using an out of date browser to Juan Eduardo Ynsil Alfaro 's post why in 250J/spr. To MELVIN SAM 's post I do n't understand how ex, Posted 6 years ago its limit. Answer as per the graph = 219.72 washers/m Note ; spring constant can be calculated using the following formula k... More about Stack Overflow the company, and our products between Hookes law takes applied!
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