the force on M is F towards right whereas on the block 2M is2F towards left .net force=3F .exten.=3F/k
- Akash Anand Can you be anymore wrong ???
Answer this question with logical explanation please.
Force acting of block 2M is 2F towards left, and on M is F towards right. Thus net accln of system is F3M towards left.
Consider the COM of the system as the frame of reference.
Applying appropriate pseudo forces on each block,
F_{2M} = 2F - 2M.F3M = 4F3 towards left.
F_{M} = F + M.F3M = 4F3 towards rights.
Let the extensions caused by F_{2M} and F_{M} be x_{1} and x_{2}.
Conserving energy,
F_{2M}x_{1} + F_{M}x_{2} = 12k(x_{1} + x_{2})^{2} [At max extension, kinetic energy = 0]
=> (x_{1} + x_{2}) = 8F3k
the force on M is F towards right whereas on the block 2M is2F towards left .net force=3F .exten.=3F/k