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 Discussion Response Post to:
Solve.
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 28 Mar 2008 15:54:40 IST
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by conservation of energy
1/2mv^2 = mgr
v^2 = 2gr
r is the length of the rod
now for the rod at vertical position
T-mg = mv^2/r
= m ( 2gr)/r+ mg
= 3mg
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