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[Post New]10 Feb 2008 23:37:48 IST
    Subject: power
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cutie_divs91 (58)

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Olaaa!! Perrrfect answer. 10  [14 rates]
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A 50 kg girl is swinging onn a swing from rest.then the power delivered when she was moving with a velocity of 2 m/s upwards in a direction making an angle 60 degrees with the vertical is-
a) 980W
b) 490W
c) 490(root 3) W
d) 245W
 
ans-b
    
 

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