A block A with mass 100 kg rests on another block B of mass 200 kg. A horizontal rope holds A to the wall. The coefficient of friction between A and B is 0.2 and that between B and ground is 0.3. The minimum force required to set B in motion is:
a) 900N
b) 100N
c)1100N
d)1200N
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Correct option is (c)
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