When a body is hinged at a point and a force is acting on the body in such \( \mathrm{P} \) a wa...
0When a body is hinged at a point and a force is acting on the body in such
\( \mathrm{P} \) a way that the line of action of force is at some distance from the hinged point, the body will start rotating about
W the hinged point. The angular acceleration of the body can be calculated by finding the torque of that force about the hinged point. A disc of mass \( m \) and radius \( R \) is hinged at point \( A \) at its bottom and is free to rotate in the vertical plane. A force of magnitude \( F \) is acting on the ring at the top most point.
Component of reaction at the hinge in the horizontal direction is
(1) \( \frac{F}{4} \)
(2) \( F \)
(3) \( \frac{F}{3} \)
(4) \( \frac{F}{2} \)
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