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in Physics by (91.8k points)
A pendulum of mass 1 kg and length  = 1m is released from rest at angle  = 60º. The power delivered by all the forces acting on the bob at angle  = 30º will be: (g = 10 m/s2)
A. `13.5` watt
B. `20.4` watt
C. `24.6` watt
D. Zero

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