weight versus gravity

[Rosalindbungs]

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hi! when it says "compare work done by gravity" does that always mean that we look at the heights to compare gravitational potential energy?

when would we examine the work done by mgcosx? would the question have to ask "compare work done by weight"?

 

[Rabolisk]

Those would be the same things.

 

[golgiapparatus88]

Potential Energy = mgh = mgcos👍h
Work = Fd = mgcos👍*h