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A carpenter of mass 50 kg is standing on...

A carpenter of mass 50 kg is standing on a weighing machine placed in a lift of mass 20 kg. A light sring is attached to the lift. The string passes over a smooth pulley and the other end is held by the carpenter as shown. When carpenter keeps the lift moving upward with constant velocity :- `(g=10m//s^(2))`

A

the reading of weighing machine is 15 kg

B

the man applies a force of 350 N on the string

C

net force on the man is 150 N

D

Net force on the weighing machine is 150 N

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The correct Answer is:
A, B
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