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posted by Help ?! on Thursday, October 7, 2010 at 2:23am.

A stopper tied to the end of a string is swung in a horizontal circle. If the mass of the stopper is 13.0 g, and the string is 93.0 cm, and the stopper revolves at a constant speed 10 times in 11.8s?

You left out the question. What do they want you to calculate? The tension in the string? If so, multiply the mass by the centripetal acceleration.

They want to find the angular velocity...so please post the answere

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