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AP EAMCET2001PhysicsLaws of Motion

A body of weight 64 ~N is pushed with just enough force to start it moving across a horizontal floor and the same force continues to act afterwards. If the coefficients of static and dynamic friction are 0.6 and 0.4 respectively, the acceleration of the body is (Acceleration due to gravity =g )

Options

  1. Ag 6.4
  2. B0.64 g
  3. Cg 32
  4. D0.2 ~g

Correct answer

D. 0.2 ~g

Step-by-step solution

w=64 ~N , _i=0.6, _k=0.4 Acceleration of the body aligned & = ( _ , - _k ) g & =(0.6-0.4) g & =0.2 ~g ~m / s ^2 aligned

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