Question
Question: A person of 50 kg stands on a 25 kg platform. He pulls on the rope which is attached to the platform...
A person of 50 kg stands on a 25 kg 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 constant rate if the force with which the person pulls the rope is –
A
500 N
B
250 N
C
25 N
D
None of these
Answer
250 N
Explanation
Solution
For the system to move at steady rate force should be zero.
3T = 750
T = 250 N