a particle is travelling along a closed vertical path. If the particle is starting and finishing at point A, how much work is done on the particle by gravity? 0 J 9.8 J 4.9 J 13.5 J
Question
a particle is travelling along a closed vertical path. If the particle is starting and finishing at point A, how much work is done on the particle by gravity? 0 J 9.8 J 4.9 J 13.5 J
Solution
The work done by gravity on a particle moving in a closed loop, starting and ending at the same point, is 0 J. This is because the work done by gravity is dependent on the change in height. If the particle ends up at the same height it started, the change in height is zero, and therefore the work done by gravity is also zero.
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