A block of mass 20 kg is kept on rough incline plane. If angle of repose is 30°, then what should be value of F ext so that the block does not move over incline plane?
Text Solution
Verified by ExpertsThe correct answer is:
D
consider the equilibrium of the block for minimum value of force we have
so 
consider the equilibrium of the block for maximum value of force we have
so 
= 
=200 N
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