A pendulum bob of mass \( \mathrm{m} \) is suspended at rest. A constant horizontal force \( \ma...

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A pendulum bob of mass \( \mathrm{m} \) is suspended at rest. A constant horizontal force \( \mathrm{F}=m g / 2 \) starts acting on it. The maximum angular deflection of the string is
(a) \( 90^{\circ} \)
(b) \( 53^{\circ} \)
(c) \( 37^{\circ} \)
(d) None of these
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