(Challenge Problem) A worker pulls a 40.0-kg crate with a rope at the 30.0o angle to the horizontal.
The coefficient of sliding friction between the crate and the floor is 0.55. If he moves the crate
with a constant velocity a distance of 7.00 m, how much work does the worker do on the crate?
(hint: make 2 equations for 2 unknowns)
Answers: 2
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(Challenge Problem) A worker pulls a 40.0-kg crate with a rope at the 30.0o angle to the horizontal....
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