A door 1.6m wide requires a minimum force of 1 N to be applied at the free end to open or close it. The minimum force that is required at a point 0.4m away from the hinges for opening or closing the door is
Text Solution
Verified by ExpertsThe correct answer is:
D
4 N
It is given in the question, torque 
= 1.6 x 1 = 1.6 N m
So, when d = 0 .4 m,
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