A body of mass m falls from a height h on to the pan of a spring balance, figure, The masses of the pan and spring are negligible. The spring constant of the spring is k. The body gets attached to the pan and starts executing S.H.M. in the vertical direction. Find the amplitude and energy of oscillation.

Answer

`a=(mg)/(k)sqrt(1+(2kh)/((M+m)g)),T=2pisqrt((M+m))//k`