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JEE Main2004PhysicsLaws of MotionActual

A block rests on a rough inclined plane making an angle of 30^ with the horizontal. The coefficient of static friction between the block and the plane is 0.8 . If the frictional force on the block is 10 ~N , the mass of the block (in kg ) is (take g =10 ~m / s ^2 )

Options

  1. A2.0
  2. B4.0
  3. C1.6
  4. D2.5

Correct answer

A. 2.0

Step-by-step solution

m =2 ~kg

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