A spring that has a force constant of 1200 N/m is mounted vertically on the ground. A block of mass 1.60 kg is dropped from rest from height of 1.50 m above the free end of the spring. By what distance does the spring compress?

Answer 1

the compression of the spring = change PE of the block

mg(1.5+x)=1/2 k x^2

solve for x