Physics Practice Problems Net Work & Kinetic Energy Practice Problems Solution: A factory worker pushes a crate of mass 30.1 kg a...

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Solution: A factory worker pushes a crate of mass 30.1 kg a distance of 4.55 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and floor is 0.26.What magnitude of force must the worker apply?How much work is done on the crate by this force?How much work is done on the crate by friction?How much work is done by the normal force?How much work is done by gravity?What is the total work done on the crate?

Problem

A factory worker pushes a crate of mass 30.1 kg a distance of 4.55 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and floor is 0.26.

What magnitude of force must the worker apply?

How much work is done on the crate by this force?

How much work is done on the crate by friction?

How much work is done by the normal force?

How much work is done by gravity?

What is the total work done on the crate?