A crate of milk chocolate is being moved up a 63° ramp as shown. The crate has a mass of 10 kg. The crate is being pushed by an applied force F=1320 N which is directed perfectly horizontally. The normal force on the crate is FN=1136 N. The crate is subject to kinetic friction as it moves characterized by coefficient of kinetic friction equal to 0.180. The crate moves a distance 1.9 m along the ramp. For each force listed below determine the work done on the crate during this motion. Be sure to include the appropriate + or -. Part A) applied force Part B) force of gravity Part C) normal force Part D) kinetic friction force Part E)T he net work done on the crate

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.