A 930 g rock is whirled in a horizontal circle at the end of a 1.3 m-long string. If the breaking strength of the string is 110 N, what is the maximum allowable speed of the rock?(adsbygoogle = window.adsbygoogle || []).push({});

OK the main problem that i am having with this equation is the fact that no angle is given. Is there a way to figure out the angle?

since the length is given: the radius is r = L cos (theta)

you need theta to calculate the velocity with the equation V= sq root ((g L cos^{2}theta)/ sin theta)

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# Homework Help: Circular Motion and speed

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