A 0.150 kg rubber stooper is attached to the end of 1.00 m string and is swung in a circle. 1. If the stopper makes 0.85 rev/s, what is the force the string exerts on the slope? 2. If the rubber stopper is swung 2.3 m above the ground and released, how far will the stopper travel horizontally before hitting the ground?

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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.