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A man of mass 50 kg carries a bag of weright 40N on his shoulder. The force with which the floorpushes up his feet will be(A) 882 NN(C) 90 N(B) 530 N(D) 600 N |
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Answer» Given, Weight = 40N and mass= 50 Kg. We know that, F=ma 40N = m x g 40/g = m 40/10 = m 4kg = m mass = mass of man + mass of bag = 50 + 4 = 54 kg Force with which the floor pushes up his feet, F = ma F = 54 x g F = 54 x 10 ~= 540N. so option(b) is the correct answer |
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