Question

- A block of mass Mis 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 will be
no​

Answer 1

Answer:

Consider the system as a whole

A block of mass M and a rope tied to it of mass m pulled by a force P,

The only external force

The system will accelerate due to the action of the force , all accelerating with same acceleration

Acceleration of the system =

Totalmass

Totalexternalforce

a =

m+M

P

Therefore acceleration of the block of mass M will also be a

Net force on it = mass x acceleration

This force is force of the rope on the block

Hence F = PM/M+M

Explanation:

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