A spring of negligible mass has ks = 1600N/m. It is placed vertically with one end on the floor.
a) How far must the spring be compressed for 3.50J of potential energy to be stored in it?
b) A 1.20kg book is dropped from 0.80m above the top of the spring. What is its kinetic energy just before it contacts the spring?
c) What is its velocity at that point?
d) What distance will the spring be compressed from its equilibrium point?