Circular Motion: Please answer vertically. Thank You. A penny is put on a turntable 0.4 meters from its center. The coefficient of friction between them is .0.20. a) What velocity can the penny have before it starts to slip? b) How many rotations can the penny make per minute at this velocity/

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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.