- #1
hqjb
- 40
- 0
Just a little confused, when work is done on an object it's energy increases right? (i.e. Work done on object = Change P.E + Change K.E + Work done by object)
So how come when gravitational force does work on an object(i.e. it falls) the potential energy decreases instead.
So its like Work done by gravitational force = Decrease in P.E + Increase in K.E = 0?
Edit : Okay, thinking about it probably because of action-reaction pair with the Earth?
So work done on body = Decrease in P.E + Increase in K.E + work done by body?
So how come when gravitational force does work on an object(i.e. it falls) the potential energy decreases instead.
So its like Work done by gravitational force = Decrease in P.E + Increase in K.E = 0?
Edit : Okay, thinking about it probably because of action-reaction pair with the Earth?
So work done on body = Decrease in P.E + Increase in K.E + work done by body?
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