A 4 kg block A is placed on the top of a 8 kg block B which rests on a smooth table. A just slips on B when a force of 12 N is applied on A. Then the maximum horizontal force on B to make both A and B move together, is
Text Solution
Verified by ExpertsThe correct answer is:
C
Maximum friction i.e. limiting friction between A and B, 
= 12 N.
If F is the maximum value of force applied on lower body such that both body move together
It means Pseudo force on upper body is just equal to limiting friction
⇒ ⇒ 
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