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A 15 kg crate is pulled up a rough incline with a force of 150 N applied parallel to the incline, which makes an angle of 30o with the horizontal. Initial speed of the crate is 2.0 m/s. If the coefficient of kinetic friction is 0.47 and the crate is pulled a distance of 6.0 m, (a) how much work is done by the gravitational force? (b) How much work is done by the frictional force (c) what is the work done by the 150 N force and (d) What is the change in kinetic energy of the crate?


A 15 kg crate is pulled up a rough incline with a force of 150 N applied parallel to the incline, which makes an angle of 30o with the horizontal. Initial speed of the crate is 2.0 m/s. If the coefficient of kinetic friction is 0.47 and the crate is pulled a distance of 6.0 m, (a) how much work is done by the gravitational force? (b) How much work is done by the frictional force (c) what is the work done by the 150 N force and (d) What is the change in kinetic energy of the crate?


Grade:10

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