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duke knooby

28 Oct 2007 21:18

A mathematical problem

A light string ABCD has one end fixed at A, passes under a movable pulley of mass M at B, over a fixed pulley C and carries a mass M' at D. The parts of the string are vertical. Show M descends with acceleration g(M-2M')/M+4M'

g=9.8 m/s2

RadioMaster

28 Oct 2007 21:28

you really expect me to solve that, when Im still (probably till three am) working on this report that has to finished tomorrow???

duke knooby

28 Oct 2007 21:31

solve it?? i expected to delete it

Lord Kagan

29 Oct 2007 11:32

surely descent would be a physics problem? the rate at which an object changes its velocity due to acceleration? which would change from planet to planet, and seeing as youre using gravity as 9.8 m/s2 im guessing the planets earth?

Lord Kagan

29 Oct 2007 11:37

wasnt me

Hypnobabe

29 Oct 2007 14:24

Quote:

Originally Posted by knooby (Post 373353)

A light string ABCD has one end fixed at A, passes under a movable pulley of mass M at B, over a fixed pulley C and carries a mass M' at D. The parts of the string are vertical. Show M descends with acceleration g(M-2M')/M+4M'
g=9.8 m/s2

Ummm.... No. Shan't.

Ner ner na ner ner.

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