A pendulum of mass \( 1 \mathrm{~kg} \) and length \( l=1 \mathrm{~m} \) is released from rest a...

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A pendulum of mass \( 1 \mathrm{~kg} \) and length \( l=1 \mathrm{~m} \) is released from rest at angle \( \theta=60^{\circ} \). The power delivered by all the forces acting on the bob at angle \( \theta=30^{\circ} \) will be (Take, \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) ).
(a) \( 13.4 \mathrm{~W} \)
(b) \( 20.4 \mathrm{~W} \)
(c) \( 24.6 \mathrm{~W} \)
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