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 meter. How much work is done.
The work done can be calculated using the formula:
work = force × distance
The force applied to lift the box is 98 newtons. The distance over which the force is applied is 4 meters. Therefore, the work done to lift the box over this distance is:
work = 98 N × 4 m = 392 Joules
However, it is important to note that the distance over which the box is lifted is only 2 meters. Therefore, the actual work done to lift the box over this distance is:
work = 98 N × 2 m = 196 Joules
Thus, the amount of work done to lift the 20 kilogram box over a distance of 2 meters is 196 Joules.