A factory worker pushes a 30.0 kg crate a distance of 5.7 m along a level...
A factory worker pushes a 30.0 kg crate a distance of 5.7 m along a level floor at constant velocity by pushing downward at an angle of 30 degrees below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25.
How much work is done by gravity?
What is the total work done on the crate?
Homework Answers
workdone by gravity
Wg = mg d cos 90 = 0 J
======
Wnet = workdone by applied force - workdone by friction
Wnet = 0 J
=======
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