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Homework Statement
A 670 gm rock is whirled on the end of a string 44 cm long which will break under a tension of 24 N.
What is the highest speed the rock can be twirled before it breaks?
Homework Equations
Centripital Acceleration = velocity ^2 / radius
F=MA
The Attempt at a Solution
F = M A
24 = .67 x (V^2 / R)
24= .67 x (v^2 / .44)
7.0752 = V^2
2.6599 = V
What am I doing wrong?