A 2kg block is released 4m from a massless spring with force constant K=100N/m that is along a plane inclined at 30°.
a. if the plane is frictionless, find the maximum compression of the spring.
b.  if the coefficient of kinetic friction between the plane and the block is 0.2, find the maximum compression.
c. for the plane in part(b), how far up the incline will the block travel after leaving the spring