Laws of MotionHard
Question
A block of mass 200 kg is being pulled up by men on an inclined plane at angle of 45o as shown. The coefficient of static friction is 0.5. Each man can only apply a maximum force of 500 N. Calculate the number of men required for the block to just start moving up the plane :
Options
A.10
B.15
C.5
D.3
Solution
Let n number of men are required for the block to just start up the plane
nf = mgsin θ + fr
n = 5
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