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A block of mass 'm' is connected to another block of mass 'M' by a spring (massless) of spring constant 'k' The blocks are kept on a smooth horizontal plane. Initially the blocks are at rest and the spring is unstretched Then a constant force 'F' starts acting on the block of mass 'M' to pull it. Find the force on the block of mass 'm' :

A

`((M+m)F)/m`

B

`(mF)/((m+M))`

C

`(MF)/((m+M))`

D

`(mF)/M `

Text Solution

Verified by Experts

The correct Answer is:
B
Combined acceleration of the two blocks
` a = (F(M+m))`

Force on block of mass m = `(mF)/(M+m)`
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