Assignment:
A block and pulley system is to be used as a nutcracker. The spring constant is 1000 N/m. The mass of the block is 2.5 kg. The unstretched length of the spring is at x = 0.1 m. Initially, x=0.25 m , the velocity of the block is 4.22 m/s and the block is 0.12 m above the top of the 0.04 m nut. Setting the datum at the top of the nut, determine the initial potential energy of block A in N m
