I am really confused with the pulley system in the link http://img100.imageshack.us/img100/5797/2323ka7.jpg
Please help me to write the constraint equation.
2006-09-30 15:56:41 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
i mean constraint equation relating accelerations of the strings......
2006-09-30 16:08:31 · update #1
fix the axis at the upper pulley. a is the distance to block 1. b is the distance to the second pulley. c is the distance to the two weights.
Then constrain equation for the system will be
a+b+2(c-b)=constant
a-b+2c= constant.
(your figure do not clarify if the first weight is parallel to the 2ND pulley or not. The answer that i wrote is if it is not parallel.)
Take derivation of the distances you will get
va-vb+2Vc=0
Aa-Ab+2Ac=0
2006-09-30 17:24:45 · answer #1 · answered by piti 2 · 0⤊ 0⤋
If by constraint, you mean equilibrium,
let the weights of the blocks be A, B, and C from left to right.
B=C
A = B+C
2006-09-30 23:05:51 · answer #2 · answered by Helmut 7 · 0⤊ 0⤋
http://www.homepages.informatics.ed.ac.uk/rbf/CVonline/LOCAL_COPIES/BAKER/node5.html
http://www.cs.ubc.ca/spider/little/505/lectures/subsubsection3_23_3_1.html
I gotta tell ya ,friend. I never heard of this gig,and I'm 57 years old. I hope these two sites can help you. Good luck,you rocket scientist,you!!
2006-09-30 22:58:21 · answer #3 · answered by I am Sunshine 6 · 0⤊ 1⤋
Huh?
2006-09-30 22:57:49 · answer #4 · answered by xinnybuxlrie 5 · 0⤊ 1⤋