A person of mass 60 kg is in uniform circular motion on the inner surface of a vertical circle. The person has speed 20 m/s and the radius of the circular path is 10 m. What fraction of the person’s actual weight is perceived when the person is at the bottom of the circular path?  (a) 30%  (b) 100%  (c) 300%  (d) 500%

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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.