Two blocks A and B of masses 6 kg and 3kg rest on a smooth horizontal surface as shown in the figure. If coefficient of friction between A and B is 0.4, the maximum horizontal force which can make them without separation is 1) 72 N 2) 40 N 3) 36 N 4) 20 N
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Answer:
Explanation:
Maximum force on 3Kg
= Umg = 0.4 x 30 = 12N
Acceleration of 3Kg = F/m = 12/3 = 4m/s^2
Horizontal force = (m1 +m2)a = 9 x 4 =36N