Physics - Circular Motion Question with Solution | TestHub

A mass m = 0.3 kg is connected to a light but rigid rotating shaft by two strings. The mass moves in a horizontal circle of radius R = 0.2√3 m at constant speed. The shorter, horizontal string has breaking strength Tmax = 5.0√3 N. The longer string, which makes an angle θ = 30° to the vertical, is much stronger. [Take g = 10 m/s²]

The minimum number of revolutions per minute so that the shorter string remains taut.