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Diya:
A certain cord will break if its tension exceeds 250 N. Suppose the cord is attached to a 0.5-kg ball, if the ball is swung in a horizontal circle at the end of an 0.8-m cord, how fast (velocity) can the ball move before the cord breaks?
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Mercury:
the highest velocity will occur when the centripetal force is *equal* to the tension force (without going over) set T = mv^2/r and solve for v
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