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[Post New]30 Nov 2007 20:57:24 IST
    Subject: Force on a stone in circular motion.
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tarinbansal (3898)

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Olaaa!! Perrrfect answer. 668  [947 rates]
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a rock attached to a string swings in a vertical circle then at the topmost point of its path,
a-2 forces act on it, resultant not=0
b- 1 force acts
c-2 forces act on it, resultant =0
d-3 forces act on it
 
Ans-(a)
 
My doubt is that there should be 3 forces acting on it- Tension, centrifugal and Mg.
But the answer given is (a).
Again a LOTS question.
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