Net Work & Kinetic Energy Video Lessons

Concept

# Problem: A box with mass 5.00 kg is pulled up a 36.9° incline by a constant force  F that has magnitude 75.0 N and that is parallel to the incline. The distance along the incline from the bottom to the top is 6.00 m. During the motion of the box, the surface of the incline exerts a constant friction force fk = 18.0 N on the box, in a direction opposite to the motion.If the box starts froom rest at the botttom of the incline, what is the kinetic energy of the box when it reaches the top of the incline?

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###### Problem Details

A box with mass 5.00 kg is pulled up a 36.9° incline by a constant force  that has magnitude 75.0 N and that is parallel to the incline. The distance along the incline from the bottom to the top is 6.00 m. During the motion of the box, the surface of the incline exerts a constant friction force fk = 18.0 N on the box, in a direction opposite to the motion.

If the box starts froom rest at the botttom of the incline, what is the kinetic energy of the box when it reaches the top of the incline?