Homework Help: physics

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...
Physics - The length of a spring increases by 7.2 cm from its relaxed length ...
physics - A spring has a force constant of 410.0 N/m. (a) Determine the ...
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 ( elestic potential energy) - A spring with a force of 5.2 N/m has a ...
Physics - A spring has a force constant of 546.5 N/m. Find the potential energy ...
Physics(Checking answer) - Sorry for the re-post but I really need to know this...
Physics - It takes 7.9 J of work to stretch a spring 4.6 cm from its unstressed...
Physics - A block with mass m = 2.00 kg is placed against a spring on a ...

For Further Reading

First Name:
School Subject:
Answer: