Posted by **Rachel** on Monday, February 25, 2013 at 1:35pm.

A block of mass m is dropped onto a relaxed spring constant k. The block becomes attached to the spring and compresses the spring a distance d before momentarily stopping. (Use any variable or symbol stated above along with the following as necessary: g for the acceleration of gravity.)

(a) While the spring is being compressed, what work is done on the block by the gravitational force on it?

W =

(b) While the spring is being compressed, what work is done on the block by the spring force?

W =

(c) What is the speed of the block just before it hits the spring?

v =

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