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- May 31, 2002
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can someone help me out on pulleys, specifically multiple pulleys. i don't understand how theres two tension forces pointing up per pulley if the force at the end of the string is going down. if you trace the force all throughout the string, one force would be going down while the other could be going up.
(o) (o) (o)
| | | | | |
| a b c d e
| | | | | |
F | | | | |
v (o) (o) Box
please use your imagination on this very rudimentary drawing. So A,B,C,D,E are all tension forces going up. But if you follow the tension force all throughout the rope starting from the box, A,C,E would all point up and BD would point down. Can anyone please explain this to me.
Sorry if you can't understand the pic... i'll try to surf the net and look for an actualy image
Thanks!
(o) (o) (o)
| | | | | |
| a b c d e
| | | | | |
F | | | | |
v (o) (o) Box
please use your imagination on this very rudimentary drawing. So A,B,C,D,E are all tension forces going up. But if you follow the tension force all throughout the rope starting from the box, A,C,E would all point up and BD would point down. Can anyone please explain this to me.
Sorry if you can't understand the pic... i'll try to surf the net and look for an actualy image
Thanks!