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physics

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a stone is tied to the end of a string and is swung with a constant speed around a horizontal circle with a radius of 1.5m. if it makes two complete revolutions each second, what is the magnitude of its acceleration?

i know the answer, but i don't know how to get it. thank you!

  • physics - ,

    acceleration= v^2/r

    where v= 2PIr/.5sec

  • physics - ,

    thank you sooo much! :)

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