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OpenStudy (anonymous):
A 0.25-kg ball attached to a string is rotating in a horizontal circle of radius 0.5m.If the ball revolves twice every second, what is the tension in the string?
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OpenStudy (anonymous):
angular velocity of the rotating ball is 4pi/s then tangential velocity is \[r \omega\] =0.5*4pi then tension is mv^2/r 0.25*4 pi^2/0.5 = 19.71 N
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