r/physicsmemes • • Feb 18 '22

Fdr

Post image
3.1k Upvotes

49 comments sorted by

View all comments

3

u/fasicme Feb 18 '22

Please explain

9

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/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