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tarun_bits (644)

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Olaaa!! Perrrfect answer. 116  [148 rates]

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for U=0 at horizontal...

we have...

v = root of 2gh

now

1/2 m (root 2gh) 2 = mgl

which gives
h=l
 this reply: 5 points  (with Olaaa!! Perrrfect answer.   in 1 votes )   [?]
 
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