# Maximum displacement of particle in elastic thread

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• November 7th 2009, 05:50 AM
ssadi
Maximum displacement of particle in elastic thread
http://www.mathhelpforum.com/math-he...1&d=1257604496
(a) My workings:
Mg-T=M*((Mg)/(M+m))
T=Mg(1-M/(M+m))
T= $\lambda$x/l
x=(Mgl/ $\lambda$)(1-M/(M+m))
Mark Scheme:
http://www.mathhelpforum.com/math-he...1&d=1257604873
I understood the mark scheme, but I don't understand what went wrong with my working, ie where is my logic faulty and what effect i have ignored. I would appreciate it if you can explain my mistake :)