What is the work done by jack

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Reference no: EM13532991

Jack pushes an 8.0kg box is through a distance of 2.2m up a 20o frictionless incline. The applied force is parallel to the incline and the speed of the box is constant.

(a) What is the work done by the normal force?

(b) What is the work done by gravity?

(d) What is the magnitude of the force that Jack applied to the box? Use the concept of work to solve this one.

(e) Suppose that the box is moving up the hill at a constant velocity of 2.0 m/s. If the applied force you calculated in part d is doubled, calculate the speed of the box after it has traveled 5.0-m (with the newly applied force). Remember, work done by the ALL the forces acting on the box equals the change in kinetic energy.

m/s

Reference no: EM13532991

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