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Jan 24, 2021 at 12:06 comment added Vivek Pandey The net work done is not mgh. Net work done is equal to 0 only. What i'm saying is that potential energy= work done by gravity( not the net work done). This can be demonstrated by free fall motion. When an object falls, we say that " potential energy of body gets converted into kinetic energy", this is basically another way of saying that work done by gravity is equal to kinetic energy of the body.
Jan 24, 2021 at 9:35 comment added Taofeek I actually made a mistake in the write-up, I meant to write "change" in kinetic energy. Can this be proved mathematically? I mean, can we mathematically work our way to getting "net work done= mgh" ? If so how?
Jan 24, 2021 at 9:21 history answered Vivek Pandey CC BY-SA 4.0