A person using a lever applies 98 Newtons to lift a 20-kilogram box. They apply the force over a distance of 4 meters to lift the box a distance of 2 meters. How much work is done?
Work is done when a force is exerted over a distance. In this case, the force applied is 98 Newtons and the distance over which the force is applied is 4 meters. Therefore, the work done is equal to the force multiplied by the distance:
Work = Force × Distance
Work = 98 N × 4 m
Work = 392 N·m
Since one Newton-meter is equal to one joule, the work done is 392 Joules.