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AP EAMCET202119 Aug 2021Evening ShiftPhysicsLaws of MotionActual

Two blocks A and B of masses 4 kg and 6 kg are as shown in the figure. A horizontal force of 12 N is required to make A slip over B . Find the maximum horizontal force F B that can be applied on B so that both A and B move together. (take g = 10 m s - 2 )

Options

  1. A30   N
  2. B27   N
  3. C32   N
  4. D25   N

Correct answer

A. 30   N

Step-by-step solution

Given, a force of 12   N is required for slipping. ⇒ F = 12 = 4 a ⇒ a = 3   m   s - 2 Total force applied on the system, F B = M a = 4 + 6 3 ⇒ F B = 30   N

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