A block of mass m is on the smooth horiz...

A block of mass m is on the smooth horizontal surface of a plank of mass M The plank is on smooth horizontal surface Now, a constant horizontal force F acts on M. Now, for a person standing on the ground:

the acceleration of m is `F/M` towards west

the acceleration of m is zero

the acceleration of m is `F/m` towards east

the acceleration of m is `F/(M+m)` towards east

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Verified by Experts

The correct Answer is:

No force acts on m
`:. A=0`

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