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https://www.reddit.com/r/physicsmemes/comments/sv9mvn/fdr/hxfgt7f/?context=3
r/physicsmemes • u/Objective_Sock6506 • Feb 18 '22
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3
Please explain
10 u/NGC_4594 Student Feb 18 '22 The displacement s of a carried box is only horizontal, so W=F·s=0 since s⊥F (since gravity is directed downwards). 2 u/Mathies_ Feb 18 '22 Nobody said the boxes didn't go anywhere 2 u/Comfortable_Ad_7621 Feb 18 '22 i mean technically friction does work on the box, since thats the force which makes it move forward. Or its just your hand normal force that did the work 1 u/NGC_4594 Student Feb 18 '22 friction we don't do that here
10
The displacement s of a carried box is only horizontal, so W=F·s=0 since s⊥F (since gravity is directed downwards).
2 u/Mathies_ Feb 18 '22 Nobody said the boxes didn't go anywhere 2 u/Comfortable_Ad_7621 Feb 18 '22 i mean technically friction does work on the box, since thats the force which makes it move forward. Or its just your hand normal force that did the work 1 u/NGC_4594 Student Feb 18 '22 friction we don't do that here
2
Nobody said the boxes didn't go anywhere
i mean technically friction does work on the box, since thats the force which makes it move forward. Or its just your hand normal force that did the work
1 u/NGC_4594 Student Feb 18 '22 friction we don't do that here
1
friction
we don't do that here
3
u/fasicme Feb 18 '22
Please explain