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 =