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A pendulum of mass 1 kg and length l = 1m is released from rest at angle θ  = 60º. The power delivered by all the forces acting on the bob at angle θ  = 30º will be: (g = 10 m/s2

(A) 13.4 W 

(B) 20.4 W 

(C) 24.6 W 

(D) zero

1 Answer

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Best answer

Correct option (A) 13.4 W

Explanation:

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