Determining the breaking strength of the string


A string under a tension of 68 N is used to whirl a rock in a horizontal circle of radius 3.4 m at a speed of 30.12 m/s. The string is pulled in, and the speed of the rock increases. When the string is 1.009 m long and the speed of the rock is 59.8 m/s, the string breaks. What is the breaking strength of the string?

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Physics: Determining the breaking strength of the string
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