An athlete twirls a 9 kg hammer tied to the end of a 1.3-m rope horizontally about his head. The hammer moves at 40.84 m/s. What is the force of tension in the rope?

Question

anonymous · Answer

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It's in circular motion, therefor undergoing centripetal acceleration, where the only force is the Tension of the rope.

$$ \sum F = T = ma_{cent}$$
$$T=m\frac{v^2}{r}$$

anonymous · Answer

where r is the length of the rope

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