of length L� (i.e., it is a pendulum). You are to investigate the motion in which the string moves in a cone with half-angle θ�. What tangential speed, v�, must the bob have so that it moves in a horizontal circle with the string

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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.