Calculating Maximum Speed for Circular Motion with Tension Limit

[TG3]

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

centripetal 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?

 

[AssyriaQ]

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?

That is not the value I receive. Check your calculation again.

 

[TG3]

Ha ha... wow. I feel dumb now. Thanks...