Question

A small block of mass 1.2 kg is launched by a compressed spring with force constant k=600 N/m. The initial compression of the spring is 0.15 m. The block slides along a horizontal frictionless surface and then up an inclined plane that makes an angle θ=40˚ with the horizontal. The coefficient of kinetic friction between the block and the inclined plane is μk=0.2. Use g=9.8m/s^2.

1. Find the maximum vertical height h reached by the block.