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A crate of mass 9.2 kg is pulled up a rough incline with an initial speed of...

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Physics

Acrate of mass 9.2 kg is pulled up a rough incline with an initialspeed of 1.42 m/s. The pulling force is 96N parallel to theincline, which makes an angle of 20.4 with the horizontal. Thecoefficient of kinetic friction is 0.400, and the crate is pulled5.02 m.
A) how much work is done by the gravitational force on thecrate?
B) determine the increase in internal energy of thecrate-incline system owing to friction?
C) how much work is done by the 96-N force on the crate?
D) what is the change in kinetic energy of the crate?
E) what is the speed of the crate after being pulled 5.02m?
Thanks

Answer & Explanation Solved by verified expert
4.2 Ratings (896 Votes)
aSince Parallel component mgSintheta and d are in oppositedirection angle between them is 180Work done by the gravitational force is given as W mgh mg    See Answer
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