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BITSAT2017PhysicsLaws of MotionActual

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 lower block A , 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

Equation of motion of lower block is F = μ M A + M B · g μ = F M A + M B g = 49 10 × 9 . 8 = 1 2 = 0 . 5

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