Q. 73.6( 10 Votes )

Two blocks A and B of mass mA and m9 respectively are kept in contact on a frictionless table. The experimenter pushes the block A from behind so that the blocks accelerate. If the block A exerts a force F on the block B, what is the force exerted by the experimenter on A?

Answer :

Let be the force by the experimenter.


From the FBD of block A,


---(1)


From the FBD of block A,


---(2)


equation (1) becomes,


Equating acceleration from both the equations, we get




Thus, answer is,


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