What is Spring: Definition and 999 Discussions

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  1. Suyash Singh

    Spring SHM Homework: Solving for Displacement of a Suspended Point Mass

    Homework Statement A point mass m= 20 kg, is suspended by a massless spring of constant 2000 N/m. The point mass is released when elongation in the spring is 15 cm. The equation of displacement of particle as function of time is : (Take g = 10 m/s2) Homework Equations A is amplitude w is...
  2. Suyash Singh

    What is the formula for calculating force using a spring balance?

    Homework Statement Homework Equations only basic school level physics will be needed in this question. The Attempt at a Solution The mass m1 pulls spring from first side and m2 pulls spring from the other side therefore reading should be m1-m2. But my answer is wrong. I can't understand what...
  3. Aleoa

    Understanding the Heat Energy of Springs: Exploring Feynman's Explanation

    In an ideal reversible case, a spring is a simple perpetual machine ; in order to introduce the slowdown of a spring in a real case and the consequent heat development in the spring, Feynman writes (here par. 4.4): "Inside a spring or a lever there are crystals which are made up of lots of...
  4. Phantoful

    Damped harmonic oscillator for a mass hanging from a spring

    Homework Statement Homework Equations Complex number solutions z= z0eαt Energy equations and Q (Quality Factor) The Attempt at a Solution For this question, I followed my book's "general solution" for dampened harmonic motions, where z= z0eαt, and then you can solve for α and eventually...
  5. jybe

    Block moves down incline, hits spring, find spring constant

    Homework Statement [/B] The block, initially at rest, slides down the ramp and compresses the spring 0.03 m. Theta = 30 degrees L = 1.25 m M of block = 2 kg Δx = 0.03 m 1) Write the expression for the initial and final energy states 2) Find the spring constant K Homework Equations mgh...
  6. M

    Finding Spring Constant Without Distance

    Homework Statement Spring Compressed = 20cm = .2m Decompresses and leaves the ground at a velocity of 5m/s Mass = 6.00 kg Homework Equations k = fx The Attempt at a Solution I have no idea where to go from here...
  7. D

    Lagrangian of two equal masses attached by a spring

    (note: I'm going to represent the lagrangian as simply L because I don't know how to do script L in latex.) Homework Statement Two particles of equal masses m are confined to move along the x-axis and are connected by a spring with potential energy ##U = \frac{1}/{2}kx^2## (here x is the...
  8. R

    Spring Stretch in Circular Motion

    Homework Statement A small ball is attached to one end of a spring that has an unstrained length of 0.200 m. The spring is held by the other end, and the ball is whirled around in a horizontal circle at a speed of 3.00 m/s. The spring remains nearly parallel to the ground during the motion and...
  9. P

    Why is the force of the spring equal to the centripetal force?

    Homework Statement A string is rotated around a point with a radius of 4 meters. Calculate the potential energy stored in the spring Homework Equations F = KX The Attempt at a Solution The solution to the problem involves making the force of a spring equal to the centripetal force. I don't...
  10. entropy1

    B Oscillations in a driven spring

    If I have a spring with resonance frequency fres and I drive it with frequency fdrive, the spring will oscillate in a superposition of two frequencies, right? Which frequencies are they?
  11. S

    Period of a mass spring system with 2 spring of same K(vert)

    A mass attached to a spring is oscillating in Simple Harmonic Motion. If an other spring of same sprinc constant is attached parrallel to the other spring, what is the period of this new system (as a function of the initial period). Here's what I did and have no idea if this is right: For the...
  12. Acreol

    Find when spring oscillates less than X

    Given the spring equations in the desmos (pretty sure they are standard from https://en.wikipedia.org/wiki/Harmonic_oscillator , but if they aren't please say so), how would you find when the spring will oscillate with a rate of change less than X (I'm using this to determine when the spring is...
  13. A

    What amplitude of simple harmonic motion of the spring....

    Homework Statement Answer: Can someone explain the answer? I don't understand why it's necessary for that the moment when the force exerted on the smaller block is greatest is when it is on the verge of slipping. Could it not already have been slipped off or maybe even 3/4 way slipped off...
  14. H

    Rubber strings pulled and realeased -- find the max height

    Homework Statement Homework EquationsThe Attempt at a Solution I tried to find constant k f = k ##\Delta##x 1/2 * 9,8 = k * 0,1 k = 49 N/m is rubber string the same as spring? Ep + EK at 0,1 meter = Ek + EP at 0,3 m 1/2 k x^2 + 0 = 1/2 k x^2 + 1/2 mv^2 v^2 = 2*49(0,08) v = 7*0,4 = 2,8...
  15. C

    No prefix: Understanding the Total Force on a Mass Attached by Two Springs

    1. Homework Statement The following problem is an example from the book ' Berkely - Waves by Frank S. Crawford Jr '. Mass 'M' slides on a frictionless surface. It is connected to rigid walls by means of two identical springs, each of which has zero mass, spring constant 'K' and relaxed length...
  16. H

    Find the time when the spring reaches its max height

    Homework Statement Homework Equations f = Spring's constant * ##\Delta x## Potential Energy = ##\frac{1}{2} kx^2## The Attempt at a Solution I try to find constant of the springs Fabove + Fbelow - W = 0 k*(0,2 m) + k*(0,2m) - ##\frac{1}{2}## * 9,8 = 0 0,4k = 4,9 k = 12,25 N/m can I use...
  17. Acookook

    Calcultating circular frequency and phase on a spring

    Am I trying to solve a simple equation, but get stuck at the basic. I have have a spring with a cube attached to it (1kg). When I pull it with 5N, the spring extends to 50mm =amplitude, (Hooks law) the koefitient is 120. The determined absortion coeffitient is 0,2^-1s. I tried to get the...
  18. V

    A mass is dropped on a plate that's suspended from a spring

    Homework Statement a load of mass m falls a height h onto a pan hung from a spring. if the spring constant is k and the pan is massless and m does not bounce, the amplitude of oscillation is Homework Equations F = - kx U = 1/2kx^2 The Attempt at a Solution mgh = 1/2kx^2, x =...
  19. V

    Amplitude of SHM of a spring hung from a ceiling

    Homework Statement A point mass of m = 20 kg is suspended by a massless of constant 2000N/m. The point mass is released when the elongation is 15cm.Find equation of shm Homework Equations F= - kx The Attempt at a Solution [/B] I'm not sure what this question is trying to say honestly...
  20. A

    Hooke's Law Lab Spring Constant Calculation

    Homework Statement I need to calculate a spring constant using measurements from a Hooke's Law Apparatus, a spring, and some weights. The weights are hung vertically from the spring and the distance is measured from the equilibrium point of the spring. If I'm solving for k, then k=F/x. I do...
  21. A

    Vertical spring, the relationship between potential energies

    I'm stuck with a solution to the vertical spring with a body suspended. The solution says that when the body's gravitational potential energy is decreasing, the spring's potential energy must be increasing. How is this correct? I understand the analysis leading to the result that the vertical...
  22. D

    Period of Oscillation for mass on a spring.

    Hi! I would just like someone to verify that I am doing this correctly (and point out what I am doing wrong if I am not). A friend is getting T = 0.148s but I don't have her calculations, but I think I am solving the problem correctly and getting 0.9634s. 1. Homework Statement A 0.87 kg mass...
  23. L

    Elastic Spring / Simple Pendulum Lowest Point

    Homework Statement A perfectly elastic spring swings in a vertical plane as a simple pendulum with a mass m suspended at the bottom of the spring. The force constant for this spring is ##k## and the unstretched length is ##L##. The spring is carefully held in the horizontal position so that the...
  24. Y

    Two masses connected by spring rotate around one axis

    Homework Statement Take the x-axis to be pointing perpendicularly upwards. Mass ##m_1## slides freely along the x-axis. Mass ##m_2## slides freely along the y-axis. The masses are connected by a spring, with spring constant ##k## and relaxed length ##l_0##. The whole system rotates with...
  25. Y

    Im back, and with a question about spring force

    Homework Statement I feel like my numbers are wrong so I just had a general question what is a typical value for k (spring constant) for a rubber band assuming in this case that k=F/x is an equation that works for rubber bands because the number i got...idk it seems rather large Homework...
  26. T

    How to find the position update for Step 2 in Spring Problem

    Homework Statement A spring has a relaxed length of 35 cm (0.35 m) and its spring stiffness is 10 N/m. You glue a 70 gram block (0.070 kg) to the top of the spring, and push the block down, compressing the spring so its total length is 12 cm. You make sure the block is at rest, then at time t =...
  27. J

    Maximum extension of the spring

    Homework Statement Ans) F/k Homework EquationsThe Attempt at a Solution Consider only figure a) . I believe the given answer is wrong . The maximum extension should be 2F/k . F/k is the extension in the spring in the equilibrium position . Maximum extension should be double of that . Work...
  28. M

    How to Calculate Spring Constant for a Vehicle Suspension?

    Homework Statement A mass of 115kg is to be suspended from a spring. When the mass increases to 575kg, the spring will move. Find the spring constant k. (This is not from a textbook, it is a project problem for a vehicle unloaded and then loaded on the same spring). y1 is the maximum height I...
  29. Arup Biswas

    Troubleshooting Mass & Spring Dynamics

    Please tell me which one is wrong! When I put a mass M on one end of a spring!
  30. Alexanddros81

    The 2.5-kg wieght is released from rest -- Determine the spring constant k

    Homework Statement 14.27 The 2.5-kg weight is released from rest in position A, where the two springs of stiffness k each are undeformed. Determine the largest k for which the weight would reach position B Homework EquationsThe Attempt at a Solution Hi. Can you check if I am going at...
  31. M

    How Does Spring Coil Count Affect Shock Absorber Performance?

    Hi All, I'm trying to design a spring for use in a shock absorber for a college project but my calculations aren't making any sense. I know this is a big ask, but if anyone knows about this stuff I'd appreciate a look. The maximum load is 16.5kN and when it's sitting it will be 5.5kN The...
  32. Alexanddros81

    A ball is placed on the spring and launched vertically, Find k

    Homework Statement 14.28 The spring of stiffness k is undeformed in the position shown. The 30-g ball is placed on the spring and launched vertically by compressing the spring 150mm and releasing it. If the ball reaches an elevation of 14.25m above A, determine the value of k. Homework...
  33. F

    Conservation of Energy -- Toy car hits and compresses a spring

    Homework Statement A toy car has a mass of 2 kg moves with initial speed of 2 m/s on a rough horizontal plane of μκ=0.14.A spring with constant of 250 N/m is fixed. Which of the following statements is true ? A) The toy does not approach the spring B) The toy just touch the spring[/url][/IMG]...
  34. E

    How Much Does the Spring Compress When a Man Jumps on a Scale?

    Homework Statement As a 75.0 kg man steps onto a scale, the spring inside the scale compresses by 0.65 mm. Excited to see that he has lost 2.5 kg since his last weighing, he jumps 0.3 m straight up into the air and lands directly on the scale. What is the spring’s maximum compression? What...
  35. Alexanddros81

    A block is released from rest, determine its velocity

    Homework Statement 14.10 Solve Prob. 12.47 by the work-energy method 12.47 When the 1.8-kg block is in the position shown, the attached spring is undeformed. If the block is released from rest in this position, determine its velocity when it hits the floor Homework EquationsThe Attempt...
  36. jzzdrmr

    Effect of spring force on acceleration

    Okay, so I am designing a new treadle hammer and I want to know how much force a spring will add to the force of the hammer. Basically I have an 8 pound head that can either fall at the speed of gravity or be forced down by a 20lb extension spring. The attached image is not my design and I...
  37. J

    Spring and Microphone (Doppler Effect...?)

    Homework Statement A microphone is suspended from a spring attached to the ceiling. Directly below, on the floor, is a source of sound that is emitting at f=440 Hz. The microphone vibrates vertically in simple harmonic motion (SHM) with a period of 2.0 seconds. The difference between the...
  38. CAT 2

    Maximum height of a spring toy launched at an angle

    Homework Statement A spring toy is launched from the ground at 2.3 m/s at an angle of 78° to the ground. What is the maximum height reached by the spring toy? Homework Equations Δt = 2(V1)Sinθ/(acceleration) ΔD = V1Δt + 1/2(acceleration)(Δt^2) The Attempt at a Solution First I solved for...
  39. I

    Two linked bodies via a spring

    Homework Statement two linked are attached to each other with a spring. If the second body is placed on a fixed support, the length of the spring is 5 cm. If we fix the first body as in the picture, the length of the spring becomes 15cm. Determine the length of the spring in the non-deformed...
  40. F

    Energy Problem with Spring, Gravity, and Friction

    Homework Statement An elevator is traveling at 30 m/s just as it touches a cushioning spring. The safety clamps engage at that moment and provide 20,000N of frictional force. The mass of the elevator is 3000kg and the spring constant is 15000 N/m. How fast will the elevator be traveling after...
  41. AbigailG

    Finding Amplitude of spring oscillation after damping

    Homework Statement [/B] A spring with spring constant 10.5 N/m hangs from the ceiling. A 520 g ball is attached to the spring and allowed to come to rest. It is then pulled down 6.20 cm and released. What is the time constant if the ball's amplitude has decreased to 2.70 cm after 60.0...
  42. V

    Two blocks of mass m1, m2 are attached to a spring

    Homework Statement Now these two blocks are pulled separately by x1 and x2 distance. Find the frequency of shm Homework Equations a = -w^2 x The Attempt at a Solution Now after m1 being pulled, it moves with acceleration a1=Force of spring/m1. acceleration of block 2 = a2=/force of...
  43. Alexanddros81

    Derive the expression for the work done by the friction force

    Homework Statement 14.6 The coefficient of kinetic friction between the slider and the rod is μ, and the free length of the spring is ##L_0 = b##. Derive the expression for the work done by the friction force on the slider as it moves from A to B. Neglect the weight of the slider. Homework...
  44. Alexanddros81

    Derive the expression for the work done by the ideal spring

    Homework Statement Derive the expression for the work done by the ideal spring on the slider when the slider moves from A to B. Assume that the free length of the spring is (a) ##L_0 = b##; and (b) ##L_0 = 0.75b## Homework EquationsThe Attempt at a Solution Can you check if my solution...
  45. M

    Finding the speed of the block for one and two springs

    Homework Statement The spring in the figure (Figure 1) is compressed by length Δx. It launches the block across a frictionless surface with speed v0. The two springs in the figure (Figure 2) are identical to the spring of figure 1. They are compressed by the same length Δx and used to launch...
  46. B

    Spring Steel Metal Strip in Eyeglasses question

    Hello.. (see 3 colored pictures below to illustrate the question) I have a pair of eyeglasses with screwless spring hinges that uses spring steel metal strip (see full pictures below). I’d like to understand something about it. When the temples are fully opened.. the spring metal strip are in...
  47. RJLiberator

    QM: 1D Potential Well Spring - Energy Levels

    Homework Statement 1D Potential V(x) = mw^2x^2/2, part of a harmonic oscillator. Suppose that the spring can only be stretched, so that the potential becomes V=infinity for x<0. What are the energy levels of this system? Homework EquationsThe Attempt at a Solution I argued my way though this...
  48. D

    Dynamics: Spring problem (Oscillation)

    Homework Statement The mass m = 4 kg and the spring constant k = 64 N/m. The spring is unstretched when x = 0. At t = 0, x = 0 and the mass has a velocity of 2 m/s down the inclined surface. What is the value of x at t = 0.8 s? The angle of incline is 20 degrees, and with the mass moving down...
  49. SirChris93

    Find the time when the spring force reaches max magnitude

    Homework Statement Show how you use calculus to find the time when the magnitude of the Spring Force reaches its maximum. Then, when you found that time show how you calculate the Spring force at that time as well. m = 1.125kg vi = .8 m/s k = 2250 N/m x = 0m Homework Equations Fs (t) = [-mvi...
  50. S

    Find the mass in static equilibrium problem involving a spring

    Homework Statement Consider a rigid 2.60-m-long beam (see figure) that is supported by a fixed 1.30-m-high post through its center and pivots on a frictionless bearing at its center atop the vertical 1.30-m-high post. One end of the beam is connected to the floor by a spring that has a force...
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