A force of P magnitude is acting on the free end of a rope of mas m attached with a block of mass M. What is the force on the block
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Explanation:
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 =
m+M
PM
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Answer:
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 :
pm/M+m
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