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LB
Numerade Educator

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Problem 2 Easy Difficulty

CE A pendulum bob swings from point II to point III along the circular are indicated in Figure $7-19$ . (a) Is the work done on the
bob by gravity positive, negative, or zero? Explain. (b) Is the work
done on the bob by the string positive, negative, or zero? Explain.

Answer

a) Negallve
b) Zero

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