- #1
adjurovich
- 119
- 21
When we are acting with some force ##F = mg## on an object of mass ##m## vertically in the positive ##y## direction, we are doing work that is equal to the work done by gravity on the same object, but of course opposite in sign. It means that net work is equal to zero, hence no change in kinetic energy according to the work energy theorem. However, does the change in potential energy only result from object’s change in elevation independent of external work - since external work + work done by conservative force (gravity) sum up to zero in this case?
The object will obviously be moving uniformly in the ##y## direction and will change elevation so I understand that it’s very logical to conclude that there must be some potential energy that body will gain, but from where?
The object will obviously be moving uniformly in the ##y## direction and will change elevation so I understand that it’s very logical to conclude that there must be some potential energy that body will gain, but from where?