Homework Help: Physics (Formula)

Posted by Eve on Wednesday, February 13, 2013 at 10:24pm.

A string requires a 191.0 N force in order to break. A 1.75 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.92 m. The maximum speed that this mass can be whirled without breaking the string is

Again I just need the formula!

Physics (Formula) - drwls, Thursday, February 14, 2013 at 7:47am
Centripetal force = M*V^2/R
= 191 Newtons

Solve for V, in units of m/s.

V^2 = 209.6 m^2/s^2
V = 14.5 m/s

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