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A small block B of mass m2 is placed on ...

A small block B of mass `m_2` is placed on another block A of mass `m_1` A constant horizontal force F is applied to the block A. All the surfaces are assumed to be frictionless. Find the acceleration of center of mass of the system

A

`(m_2^2F)/(m_1+m_2)`

B

`F/(m_1+m_2)`

C

`F/m_1`

D

`(m_1^2F)/(m_1+m_2)`

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