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A block moves in uniform circular motion...

A block moves in uniform circular motion because a cord tied to the block is anchored at the center of a circle. Is the power of the force exerted on the block by the cord positive, negative, or zero?

Text Solution

Verified by Experts

zero
Explanation: `barF` and `vecv` are perpendicular.
`Power=barF*vecv=Fvcos90^@=Zero`
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Knowledge Check

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