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A ball swings from an initial angle $ \theta_1 $ to an angle $ \theta_2 $, as shown above.

What is the change in the potential energy of the ball?

A

$ mgl\cos(\theta_1- \theta_2) $

B

$ mgl(\cos\theta_1 - \cos\theta_2) $

C

$ mgl(\cos\theta_2 - \cos\theta_1) $

D

$ mgl\sin(\theta_1-\theta_2) $

E

$ mgl\sin(\theta_2 - \theta_1) $

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