Posted by rachel on Thursday, October 30, 2008 at 3:15am.
a spring with spring constant k= 100N/m is at its equilibrium length
a) how much elastic potential energy is stored in the spring?
b) the same spring is stretched so that it is 6cm longer than it was. How much elastic potential energy is stored in the spring now?
c) a different spring with spring constant four times larger than in part (a) is compressed so that it is 2cm shorter than its equilibrium length. How much elastic potential energy is stored in this spring?

physics  bobpursley, Thursday, October 30, 2008 at 7:24am
I am not certain of what you are stuck on. At equilibrium, there is no PE stored in the spring. When using F=kx, and KE=1/2 k x^2, be certain x is in meters.
Answer This Question
Related Questions
 Physics  A spring with spring constant k=100 (N/m) is at its equilibrium length...
 science/physics  A spring has a force constant of 590.0 N/m. (a) Determine the ...
 science/physics  A spring has a force constant of 590.0 N/m. (a) Determine the ...
 physics  A spring has a force constant of 410.0 N/m. (a) Determine the ...
 Physics  Assume a spring has an unstretched length Xo. Write an expression for...
 Physics  Assume a spring has an unstretched length Xo. Write an expression for...
 Physics  There 46.5J of elastic potential energy stored in a spring. How far is...
 Physics  The length of a spring increases by 7.2 cm from its relaxed length ...
 physics  A spring (spring 1) with a spring constant of 520N/m is attached to a ...
 Physics  A spring has a force constant of 546.5 N/m. Find the potential energy ...
More Related Questions