Spring Definition and 999 Threads

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  1. Gabriele99

    How long will the ball and the spring be in contact?

    https://physics.stackexchange.com/questions/407908/if-i-push-a-ball-on-a-string-till-this-is-completely-compressed-how-long-will-t. This is my complete question. I've been wondering on this topic for quite a while. I really can't visualize what happens at the border between the spring and the...
  2. J

    What is the minimum charge needed for a ball to jump in an electric field?

    I don't really know how to fit what i want to this template, but i'll try. The thing is that i wonder if anyone can explain to me step-by-step what happened in this solution, because i don't really understand it. Homework Statement There are two balls. Upper one(mass m, charge Q) hung on a...
  3. WeiShan Ng

    [Calc] Sign Convention in damping spring system

    Homework Statement A carriage is mounted on a spring, as shown in the diagram. The bottom of the spring is fixed to the ground. The carriage (loaded with its passenger) has a mass of 150kg. The carriage can only move vertically. The natural length of the spring is 10m and its spring...
  4. J

    How Does a Force Affect Spring Length Between Two Equal Mass Blocks?

    Homework Statement [/B] There are two blocks that have equal mass m, they are connected by a spring (with a coefficient of elasticity k) that has length l0. Instantly on the left block a force F begins to act. What will be the min. and max. length of this spring during this movement. There...
  5. lc99

    How Do Spring Length Calculations Relate to Frequency and Harmonics?

    Homework Statement Homework Equations v = sqrt(F/(m/L)) The Attempt at a Solution Trying to find the length of the spring. But i can find the tension of the wire at all. I'm not sure what i can do with the frequencies? Maybe I'm forgetting a concept cause i thought the equation v^2/F = L...
  6. A

    Is energy profile of a spring asymmetric with +x and -x?

    Homework Statement [/B] The problem is with part b(ii). This is an A level question so only elementary concepts are to be used. Homework Equations $$E = \frac{1}{2}kx^2 $$ The Attempt at a Solution EPE should be max at 0, 0.4, 0.8 since E is a function of $x^2$. However, mark scheme only...
  7. A

    Potential ##V## and potential energy ##E_{pot}##?

    Hi, I know that in an elecric field the potential energy ##E_{pot}## is equal to the potential ##V## times the charge ##E_{pot}=q V##. Here my problem: I know that the potential energy of a spring is ##E_{pot}= \frac{1}{2}kx^2##. In my theoretical physics book i read also that the potential is...
  8. F

    Spring and Rock Homework: Finding Separation

    Homework Statement Homework Equations U = (1/2)kx^2 T = 2 * π * (m/k)^ (1/2) The Attempt at a Solution [/B] T = 2 * π * (m/k)^ (1/2) T ^ 2 = 4 * π^2 * (m/k) k = (4 * π^2 * m) / T^2 So I know the initial potential energy is: U = (1/2)kx^2 U = (1/2)x^2 * ((4 * π^2 * m) / T^2) However, I...
  9. ubergewehr273

    Problem about an impulse and a spring

    Homework Statement The attached image. Homework Equations Momentum conservation Conservation of mechanical energy The Attempt at a Solution I tried conserving momentum, ##P=mv_{1} + Mv_{2}## and then conserving M.E., P^2/(2m)=1/2##mv_1{1}^2## + 1/2##Mv_{2}^2## After that I can't seem to...
  10. isukatphysics69

    Find the max compression of the spring

    Homework Statement Homework Equations ke = .5mv^2 The Attempt at a Solution Ei= .5m1v21 + .5m2v22 + PEs(PEs initially 0) Ef= .5m1v21 + .5m2v22 + PEs(PEs is now .5(16.2)(.2672)set them equal and then solve for velocity right? is this the right approach?
  11. gibberingmouther

    Work to stretch a spring question (nvm, figured it out)

    <Moderator's note: Moved from a technical forum and thus no template.> NEVERMIND: yeah i get it now. y = k*X literally at x = X. don't know why i had trouble with that so i see how to derive .5 * k * X^2 (work done to move a spring from rest to a length X) from calculus. but i was looking...
  12. isukatphysics69

    Find the initial speed of a block before it hits a spring

    Homework Statement Homework Equations W =ΔKE The Attempt at a Solution found work done by spring -1.3 =ΔKE -1.3 = KEFINAL - KEINITIAL -1.3 = .5(0.25)(VFINAL2) - .5(0.25)(VINITIAL2) Since v final is 0 since it stops momenteraly at the bottom of the spring -1.3 = - .5(0.25)(VINITIAL2)...
  13. isukatphysics69

    Find the work done by the spring force on a box

    Homework Statement Homework EquationsThe Attempt at a Solution Wspring = ∫-k*xdx limits of integration are 12 and 0 So [0 - .12^2/2]*172 = -1.24J of force Getting 1.8/2 points for this anser
  14. Suyash Singh

    What is the tension in part GH?

    Homework Statement Homework Equations g is the acceleration due to gravity a is the acceleration of system The Attempt at a Solution g is the acceleration due to gravity Force=3(g+a) Force=6(g-a) solving both equations, a=g/3 tension =force=4g How do i calculate tension in the particular...
  15. bravopipo

    Calculate the characteristics of this compression spring

    Homework Statement Hello; I have as shown in the picture, a rope (in green), this rope is located between a support A and a support B. The Support A doesn't move and attached to the ground. The support B apply a force F1 against the rope, this force is made by a helical compression spring...
  16. Ari

    How to find period of a SHM concerning a cube and spring?

    1. Homework Statement The 4.00 kg cube in the figure has edge lengths d = 8.00 cm and is mounted on an axle through its center. A spring ( k = 1400 N/m ) connects the cube's upper corner to a rigid wall. Initially the spring is at its rest length. If the cube is rotated 4.00° and released, what...
  17. J

    Why Is Energy Conservation Not Valid in Moving Frames?

    Homework Statement Homework EquationsThe Attempt at a Solution If I work in the lab frame I get the correct answer 4J . But I do not understand why I do not get the correct answer if I work in the moving frame of block B . After collision with block A , block B starts moving with 2m/s...
  18. P

    Resultant force of spring at the instant of release?

    Homework Statement What would the resultant force have been at the instant of release, if a 350 g mass were suspended from your spring, pulled down 3 cm and released? What would have been the instantaneous acceleration at the moment of release? The questions pertain to an experiment with a...
  19. 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...
  20. 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...
  21. 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...
  22. 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...
  23. 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...
  24. 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...
  25. 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...
  26. 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...
  27. 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...
  28. 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?
  29. 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...
  30. 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...
  31. 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...
  32. 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...
  33. 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...
  34. 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...
  35. 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...
  36. 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 =...
  37. 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...
  38. 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...
  39. 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...
  40. 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...
  41. 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...
  42. 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...
  43. 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...
  44. 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 =...
  45. 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...
  46. 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...
  47. 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!
  48. 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...
  49. 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...
  50. 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...
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