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A mam of mass 50 g stands on a frame of ...

A mam of mass 50 g stands on a frame of mass 30 g. He pulls on a light rope which passes over a pulley. The other end of the rope is attached to the frame. For the system to be in equilibrium what force man must exert on the rope?

A

40 g

B

80 g

C

30 g

D

50 g

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Force exerted by man on rope transfers to it in the form of tension.
Net upwards force on the system is 2T or 2F.
Net downward force is (50+30)g=80g.
For equilibrium of system, 2F=80g or F=40g
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