# A block of mass M  is pulled along a horizontal frictionless surface by a rope of mass m. If a force P is applied at the free end of the rope, the force  exerted by the rope on the block is: Option 1) Option 2) Option 3) Option 4)

As we learnt in

Motion when block are connected with string -

- wherein

:        Acceleration of block  $(a)= \frac{Force \: \: applied }{Total \: mass}$

or          $a=\frac{P}{(M+m)}$

Force on block   $= Mass \: of \: block\times a=\frac{MP}{(M+m)}.$

Correct option is 1.

Option 1)

This is the correct option.

Option 2)

This is an incorrect option.

Option 3)

This is an incorrect option.

Option 4)

This is an incorrect option.

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