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A light spring with force constant 3.95 N/m is compressed by 7.68 cm as it is he

ID: 1683455 • Letter: A

Question

A light spring with force constant 3.95 N/m is compressed by 7.68 cm as it is held between a 0.263 kg block on the left and a 0.526 kg block on the right, both resting on a horizontal surface. The spring exerts a force on each block, tending to push them apart. The blocks are simultaneously released from rest. Find the acceleration with which each block starts to move, given that the coefficient of kinetic friction between each block and the surface is the following values. (Let the coordinate system be positive to the right and negative to the left. Be sure to include the sign to indicate the direction of the acceleration.)

(a) = 0

acceleration of heavier block:
acceleration of lighter block:

(b) = 0.010

acceleration of heavier block:
acceleration of lighter block:

(c) = 0.138

acceleration of heavier block:
acceleration of lighter block:

I would really like to see how this is set up more than anything. I would assumed finding the spring potential energy (I got 0.01165J) and setting the two equal to it somehow added together? Help would be much appreciated!!

Explanation / Answer

http://rapidshare.com/files/406694571/Doc3.pdf go to above link and download the file as free user it contains your answer....

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