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In the given diagram, with what force mu...

In the given diagram, with what force must the man pull the rope to hold the plank in position? Weight of the man is 60 kg. Neglect the weight of plank, rope and pulley.

A

150 N

B

300 N

C

600 N

D

120 N

Text Solution

Verified by Experts

The correct Answer is:
A
Man:

`T+N_(0)-60=0` (i)
Plank

`3T-N_(0)=0` (ii) T=150 N
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