Elastic potential energy Definition and 92 Threads

Good afternoon, First of all, this is not a homework question, but I'm not sure whether it should be posted on the Homework section. My problem arose when I tried to think about what happens when a spring does work in two blocks. First, consider two blocks (1 and 2) on a frictionless...

Homework Statement A mass of 1.5 kg oscillates vertically at the end of a lightweight spring. The spring has a spring constant of 145 Newtons per meter. The amplitude of the motion is 8.00 cm. From this data, complete the table below. I have to find velocity, acceleration, elastic...

Here's the problem I've been working on: "A mass is oscillating with amplitude A at the end of a spring. How far (in terms of A) is this mass from the equilibrium position of the spring when the elastic potential energy equals the kinetic energy?" Now I know that Us = 0.5*k*x^2 and K =...

Question: Is more elastic potential energy stored in a spring when the spring is compressed by one centimeter than when it is stretched by the same amount? my conclusion: part of the definition in the book states that Elastic Potential Energy is the energy that a spring has by virtue...

Homework Statement A pinball machine launches a 90g ball with a spring driven plunger. The game board is inclined at an angle of 6\circ above the horizontal. Assume the plunger's mass and frictional effects are negligible. The acceleration of gravity is 9.8m/s2. Find the force...

Homework Statement Suppose you have a mass/spring system (with spring constant k) buried underground such that its relaxed (equilibrium) position is level with the ground. Then suppose someone takes a small ball of mass m and compresses the spring a distance xo below the mass/spring's...

I feel so confused right now, I'm probably over thinking this though. Please help! 1) A slingshot consists of a light leather cup, containing a stone, that is pulled back against two parallel rubber bands. It takes a force of 11 N to stretch either one of these bands 1.1 cm. (a) What is the...

Homework Statement In a physics lab experiment, a spring clamped to the table shoots a 22 g ball horizontally. When the spring is compressed 18 cm, the ball travels horizontally 5.2 m and lands on the floor 1.5 m below the point at which it left the spring. Homework Equations Us=...

where does the formula 1/2 Fx come from - i need to find out where the half comes from for some coursework of mine :S cheers,:cool:

Homework Statement a force of 2.0 N is needed to push a .1k jack in the vox into its box, an operation in whihc the spring is compressed .1 m. what will be eh maximum speed of the jack in the box when it comes out? Homework Equations k=f/x T=2pi(sq.root(m/k) Vmax=(2piA)/T The...

A 2.40 kg object is hanging from the end of a vertical spring. The spring constant is 40.0 N/m. The object is pulled 0.200 m downward and released from rest. Complete the table below by calculating the translational kinetic energy, the gravitational potential energy, the elastic potential...

Homework Statement A spring has a force constant of 30000 N/m. How far must it be stretched for it's potential energy to be 47 J? Answer in units of m.Homework Equations Us= 1/2k(∆x)^2The Attempt at a Solution 47= 1/2 (30000)(x)^2 47=15000(x)^2 -14953= x^2 √14953= 122.28

Homework Statement The staples inside a stapler are kept in place by a spring with a relaxed length of 0.115 m. If the spring constant is 51 N/m, how much elastic potential energy is stored in the spring when its length is 0.150 m? Ok, so: Relaxed length= 0.115 m k= 51 N/m x= .150-.115=...

Homework Statement Here's the question: Block A in the figure below has mass 1.00 kg, and block B has mass 3.00 kg. The blocks are forced together, compressing a spring S between them; then the system is released from rest on a level, frictionless surface. The spring, which has negligible...

Hi I am trying to find at what hight i need to drop a egg from 2-6 meters. We will start with 2 meters. The weight of the egg and device holding the egg is .11kg together. I no the formulas for EPE and EP " EPE=1/2KX^2 AND PE=mgh. The question is now how to find where on the elastic band to...

Hi I am trying to find at what hight i need to drop a egg from 2-6 meters. We will start with 2 meters. The weight of the egg and device holding the egg is .11kg together. I no the formulas for EPE and EP " EPE=1/2KX^2 AND PE=mgh. The question is now how to find where on the elastic band to...

Homework Statement A spring (k=75 N/m) has an equilibrium length of 1 m. The spring is compressed to a length of .5 m and a mass of 2 kg is placed at its free end on a frictionless slope which makes an angle of 41 degrees with respect to the horizontal. The spring is then released. a) If the...

Suppose we have a rubber band of some elasticity k and of unstreched radius r0 (the band is always kept in the shape of a circle). What work is necessary to strech it to some larger radius r? How do we apply Hooke's law in this situation? Thanks

A 2.40 kg object is hanging from the end of a vertical spring. The spring constant is 41.0 N/m. The object is pulled 0.200 m downward and released from rest. Complete the table below by calculating the translational kinetic energy, the gravitational potential energy, the elastic potential...

A slingshot will shoot a 10-g pebble 22.0 straight up. How much potential energy is stored in the slingshot's rubber band? the solution is U = mgy = (10 g)(9.8 m/s^2)(22.0 m) according to the book. does this mean the potential energy of the slingshot's rubber band is equal to the...

Homework Statement A simple harmonic oscillator has a total energy E. a) Determine the kinetic and potential energies when the displacement is one half the amplitude. b) For what value of the displacement does the kinetic energy equal the potential energy? Homework Equations PEs=...

[SOLVED] Spring Elastic Potential Energy Hi, I have a question (link below with scanned page) on a spring, some load and I have the strain energy of the spring. Can anyone help me double check (a) and guide me along with (b) and (c)? From there I think I know how to do part (d). Your...

[SOLVED] Elastic potential energy I am not sure what the question ask, and have no clue in solving this question, can somebody help me? http://tinyurl.com/3a8vnu

Hello Everyone. It has a year since I have worked with Elastic Potential Energy & I have forgotten the formula to work it out. I have this question and would appreciate it if anyone could tell me how to do it, or tell me the formula of how to work it out. So here it is: Rachel pulls...

Homework Statement A spring of spring constant k is suspended from the ceiling with a mass M attached to its lower end. The spring has negligible mass. Show that the sum of the elastic potential energy of the spring and the gravitational potential energy of the mass is a minimum at the...

Homework Statement A glider with mass 0.200kg sits on a frictionless horizontal air track, connected to a spring with force constant k = 5.00N/m. You pull on the glider, stretching the spring 0.100m and then release it with no initial velocity. The air track is turned off, so there is a...

Homework Statement A horizontal spring, of force constant 12 N/m is mounted at the edge of a lab bench to shoot marbles at targets on the floor 93.0 cm below. A marble of mass 8.3 X 10 ^ -3 kg is shot from the spring, which is initially compressed a distance of 4.0 cm. How far does the marble...

Homework Statement A toy car of mass 0.5kg is pushed agains a spring so that it is compressed by 0.1m. The spring obeys Hooke's Law and has a spring constant of 50N/m. When the toy car is released, what will its speed be at the instant that the spring returns to its natural length? Assume that...

Elastic Potential Energy Question! tough An 86.0 kg climber is scaling the vertical wall of a mountain. His safety rope is made of nylon that, when stretched, behaves like a spring with a spring constant of 1.20 x 10^3 N/m. He accidentally slips and falls freely for 0.750 m before the rope runs...

Question - A stretched elastic band of mass 0.67g is released so that its initial velocuty is horizontal, and its initial position is 9.6 com above the floor. What was the elastic potential energy stored in the stretched band if, it has a horizontal displacement of 3.6 m from its initial...

Two blocks of masses M and 3M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them. A cord initially holding the blocks together is burned; after this, the block of mass 3M moves to the right...

1) A 60 kg person drops from rest a distance of 1.20 m to a platform of negligible mass supported by a stiff spring. The platform drops 6 cm before the person comes to rest. What is the spring constant of spring? a.4.12E5-------b. 2.56E5---------c. 3.92E5--------d. 5.45E4----e. 8.83E4 I...

Hey guys , I got another question , here goes : A particle P of mass m is attached to one end of a light elastic string of natural length l whose other end is atached to a point A on a ceiling. When P hangs in equilibrium AP has legth 5/3l. Show that if P is projected vertically downwards...

1.60 kg object is hanging from the end of a vertical spring. The spring constant is 48.0 N/m. The object is pulled 0.200 m downward and released from rest. Complete the table below by calculating the translational kinetic energy, the gravitational potential energy, the elastic potential energy...

Hello, I took a test on Simple Harmonic Motion today and the very last problem looked something like this: A simple harmonic oscillator has a total energy of E. (a) Detemine the kinetic and potential energies when the displacement is one half the amplitude. (b) For what value of the...

I need to know how to go about finding the speed. A block B of mass 5 kg is fastened to one end of each of two springs. The other ends of the springs are attached to fixed points A and C, 4 metres apart on a smooth horizontal surface, as shown in the diagram. Spring AB has natural length...

This is not my problem, it's a friends but I have no idea how to tackle it: A block B of mass 5 kg is fastened to one end of each of two springs. The other ends of the springs are attached to fixed points A and C, 4 metres apart on a smooth horizontal surface, as shown in the diagram...

A 2.0 kg mass is pressed against a spring (k = 800N/m) such that the spring has been compressed 0.22 m. The spring is released and the mass moves along a horizontal frictionless surface and up a frictionless slope. Calculate: a) the maximum elastic potential energy of the spring b) the maximum...

There is a "cannon" that is a 3-ft diameter tube that is 12-ft. long with a stiff spring inside. The spring will be compressed to 1/10 its normal length and held. You will be on the spring. With perfect aim you will fly through the air over a 15-ft wall and land safely in a net. The spring is...

You are given an 8.00 kg box resting on a spring. The spring is compressed 7.0 cm by the box. (a) What is the spring constant? ____ N/cm (b) The box is pushed down an additional 30.0 cm and released. What is the elastic potential energy of the compressed spring just before that...

Fasten one end of a vertical spring to the ceiling, attach a cabbage (or any other mass) to the other end, and then slowly lower this cabbage until the upward force on it due to the spring balances the gravitational force on it. 1. Show that the loss of gravitational potential energy of the...

Physics students are testing an old bed spring which is compressed 4cm when a force of 4 N is applied. This spring is secured to a wall and a bowling ball of 4kg is roled into it so that it hits at a speed of 2m/s 1. Calculate the compression of the spring when the speed of the ball has been...