Two equal 16.5 kg masses are at the ends of a 4.6 kg 60.5 cm rod that is initially spinning about the rods center at 55.7 rev./sec. suddenly the rods length is increased to 92.3 cm. How fast is the rod (& masses) spinning now? Neglect any frictional interactions in the axle. Enter in your in rev./sec.

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.