A small object is released from rest at point A, as shown in the picture below. What is its speed, in m/s, when it passes through B? L= 1.2 m and e=20°.

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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.