Question

A factory worker pushes a 30.0 kg crate a distance of 4.5 m along a level...

 A factory worker pushes a 30.0 kg crate a distance of 4.5 m along a level floor at constant velocity by pushing downward at an angle of 30° below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25.


 Part A

 What magnitude of force must the worker apply to move the crate at constant velocity?

 Part B

 How much work is done on the crate by this force when the crate is pushed a distance of 4.5 m?

 Part C

 How much work is done on the crate by friction during this displacement?

 Part D

 How much work is done by the normal force?

 Part E

 How much work is done by gravity?

 Part F

 What is the total work done on the crate?



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