Laws of MotionHard
Question
A 50 kg person stands on a 25 kg platform. He pulls mass less rope which is attached to the platform via the frictionless, massless pulleys as shown in the fig. The platform moves upwards at a steady velocity if the force with which the person pulls the rope is
Options
A.500N
B.250N
C.25N
D.50N
Solution
(M + m)g = 3F
(50 + 25)g = 3F
F = 250 N
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