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Manipal MET2016PhysicsLaws of Motion

Two blocks A and B are placed one over the other on a smooth horizontal surface. The maximum horizontal force that can be applied on the upper block B , so that A and B move without separation is 49 N . The coefficient of friction between A and B is

Options

  1. A0.2
  2. B0.3
  3. C0.5
  4. D0.8

Correct answer

C. 0.5

Step-by-step solution

Given, F=49 ~N , M_A=7 ~kg , M_B=3 ~kg , = ? Equation of motion of two blocks-system F_ = (M_A+M_B ) g aligned & = F (M_A+M_B ) g & = 49 (7+3) 9 8 aligned aligned & = 49 10 9.8 & =0.5 aligned

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