A rock is suspended from a string, and i...

A rock is suspended from a string, and it moves downward at constant speed. Which one of the following statements is true concerning the tension in the string if air resistance is not ignored ?

A

The tension is zero newtons.

B

The tension points downward.

C

The tension is equal to the weight of the rock.

D

The tension is less than the weight of the rock.

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Verified by Experts

The correct Answer is:

D

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