- #1
quietrain
- 655
- 2
if i sit on my bed(those with rollers at the btm), wouldn't i form a close system with it?
so since i form a system with it, i cannot exert forces on it right? which means i can't move it unless i exert a force on a 3rd party like a wall of something.
but why is it if i roll around on the bed, it moves?
so since i form a system with it, i cannot exert forces on it right? which means i can't move it unless i exert a force on a 3rd party like a wall of something.
but why is it if i roll around on the bed, it moves?