shm

two blocks of mass 3 n 6kg r attached to a spring of k=800N/M on a horizontal surface.the spring is initially compressed by 6 cm n then released.
1. the particales perform SHM with time period π/10 sec.
2. the block of mass 3kg perform SHM with amplitude 4cm.
3. the block of mass 6kg will have max. momentum 2.40kgm/s
4. their time periods will be in the ratio of 1:√2