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A record turntable rotates at 33.3 rpm. What is the period in seconds?

March 2nd, 2010 by admin


33.3 rev / min * 1 min / 60 sec

The principle is to multiply by a ratio(s) equal to 1 so that some engineering units will cancel out and you are left with the engineering units required in your answer.

In the answer I gave "min" cancels out and you are left with "rev/sec."

One Response to “A record turntable rotates at 33.3 rpm. What is the period in seconds?”

  1. #1
    David N
    March 2nd, 2010 1:15 pm

    33.3 rev / min * 1 min / 60 sec

    The principle is to multiply by a ratio(s) equal to 1 so that some engineering units will cancel out and you are left with the engineering units required in your answer.

    In the answer I gave "min" cancels out and you are left with "rev/sec."
    References :

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