Question

Two laborers are controlling the slide of a 400 kg crate down a ramp at constant velocity. One of them is pulling a rope (T) and the other is holding (resisting) by hand (P). The angle of contact each makes with the crate is 30.0 degree. Draw a free-body diagram for the crate and identify all forces. (2 pts.) If the coefficient of kinetic friction between the crate and the ramp is 0.20, the ramp angle is 25.0 degree, and the "puller" force (T) is 500 N, find the force exerted by the "pusher' (P). Find the normal force and the frictional force between the crate and the ramp. What is the fraction (%) of each force exerted by the laborers, to the total weight of the crate?

Answer 1

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