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A cord 0.65m long exerts a centripetal force of 23N on a whirling 2kg mass tied to the end of the cord. What is the velocity of the whirling mass? Round to nearest tenth.

For this problem, I used to formula V = square root of f/rm.
I did the square root of 23/0.65(2) = 8.4m/s^2, but it wasn't correct.

Thanks for your help!

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