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Q.

A 50 kg person stands on a 25kg platform. He pulls on the rope which is attached to the platform via the frictionless pulleys as shown in the figure. The platform moves upwards at a steady rate, if the force with which the person pulls the rope is

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a

500 N

b

250 N

c

25 N

d

None of the above

answer is B.

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Detailed Solution

Study rate means, net force=0

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