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A wooden block is dragged along a smooth surface with a rope parallel to the floor attached to it.If the force on the string is 30n and the mass of the work is 3.2kg.What is the value of the coefficient of the limiting friction

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sqdancefan

Answer:

  0.957

Explanation:

Assuming the surface is parallel to the floor and the block is not accelerating, the coefficient of friction will be the ratio of the horizontal force to the normal force. The normal force will be the force due to gravity:

  F = Ma = (3.2 kg)(9.8 m/s²) = 31.36 N

Then the ratio of the forces is ...

  μ = horizontal force/vertical force = (30 N)/(31.36 N)

  μ ≈ 0.956633

The coefficient of friction is about 0.957.

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