Physics - Work Question

energy & work are not measured in Newtons

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free body diagram?

Work is equal to the change in potential energy. W=mgh

you right, sorry, joules

So wait, only veritcal displacement matters because the passenger is pushing up on the stairs?

>>8535921
baka, the work done by weight is essentially (|W|)(the vertical displacement). It's not in Newtons, it is exclusively in Joules

>>8535942
Yeah. Potential energy (and work) stays the same no matter if you climb a hill straight up or take a 10 kilometer long detour.

>>8535948

And just to be clear, this is about the work on the suitcase. The work done by friction on the person doing this changes of course but this isn't about that.

>>8535942
No because near surface gravity is a conservative force that only cares about vertical displacement. If you actually do the work calculation you'll find this to be true.

So with this in mind, I set Sum of Force = ma + mg, and velocity is constant, so Sum Of Force = mg (m = 21.9 kg)?

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I scribbled out some stuff, is this a perfect force body diagram or what

>>8535947

>baka

Never should have shut down those internment camps.

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Looks like I understand now. On the body diagram, I should have put applied force in place of Normal Force, and I figured out that what I did to find mass was negligible. One last picture, thanks fellas

Maybe I'll need help again in a bit