Which of the following is true: A) kinetic friction is responsive (changing) but less than maximum static friction.B) kinetic friction is constant and greater than maximum static friction. C) kinetic friction is constant but less than maximum static friction.

Respuesta :

The formula for the kinetic frictional force is given as

[tex]f_k=\mu_kmg[/tex]

*Here m is the mass of the block

*Here g is the acceleration due to the gravity

From the above expression, the mass of the object and the value of the acceleration due to gravity is constant. The value of the coefficient of kinetic friction remains the same for all the surfaces. Therefore, the kinetic friction is constant but less than the maximum static fritction.

Hence, the correct option is (C)

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