A crate of mass 10.3 kg is pulled up a rough incline with an initial speed...

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Physics

A crate of mass 10.3 kg is pulled up a rough incline with aninitial speed of 1.43 m/s. The pulling force is 93.0 N parallel tothe incline, which makes an angle of 19.4Â° with the horizontal. Thecoefficient of kinetic friction is 0.400, and the crate is pulled4.97 m.
(a) How much work is done by the gravitational force on thecrate?
J
(b) Determine the increase in internal energy (related to thermalenergy, having the opposite sign of the work done by friction) ofthe crate-incline system due friction .
J
(c) How much work is done by the 93.0 N force on the crate?
J
(d) What is the change in kinetic energy of the crate?
J
(e) What is the speed of the crate after being pulled 4.97 m?
m/s

Answer & Explanation Solved by verified expert

3.8 Ratings (364 Votes)

a Work done by the gravitational force on the crate W gravitational force along the incline displacement mgsinS 10398sin194497 11663J b Increase in internal energy ve of work done by friction work See Answer

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