Question

A mass of 0•5 kg is attached to a spring. The mass is then displaced from its equilibrium position by 5cm and released. It's speed as it passes the equilibrium position is 50cm/s.
A)calculate the spring constant of the spring.
B)calculate the maximum acceleration of the block.
C)calculate the speed of the block when x=3cm.
C)calculate the pariod of oscillation.
D)calculate the acceleration when x=2cm.
E)calculate the total mechanical energy of the system.