Homework Help: Physics

Posted by Lauren on Sunday, October 17, 2010 at 11:11pm.

A 1.80 kg block slides on a frictionless horizontal surface. The block hits a spring with a speed of 2.00 m/s and compresses it a distance of 11.0 cm before coming to rest. What is the force constant of the spring?

Physics - drwls, Monday, October 18, 2010 at 2:27am
When compressed the maximum amount , the potential eneegy stored in the spring equals the initial kinetic energy. Thus

(1/2) k X^2 = (1/2) M Vo^2

k = M(Vo/X)^2

Vo = 0.11 m

Solve for k

k will have units of N/m

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