Question

A box with a mass of 7.01 kg is sliding along a horizontal surface at constant velocity. It is pulled by a horizontal force and the coefficient of kinetic friction between the box and the surface is 0.375.

**Part (a)** What is the work done, in joules, by
the pulling force as the box moves a distance of 0.495 m?

**Part (b)** What is the work done, in joules, by
the force of friction **33% Part (c)** What is the
work done, in joules, by the net force on the box? on the box as
the box moves a distance of 0.495 m?

Answer #1

Since the velocity is constant, acceleration will be zero. Use this to find the required applied horizontal force and hence find the work done as shown below

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