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3 September, 21:02

A pulley of diameter 49.0 in revolves at 1860 rpm. What is the diameter of a second pulley, in inches, if it rotates at 620 rpm?

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Answers (2)
  1. 3 September, 23:47
    0
    Answer;

    First pulley;

    Diameter; 49.0, revolutions 1860 rpm

    Second pulley;

    Diameter; x; revolutions 620 rpm

    To get the diameter of the second pulley;

    = (Diameter of the first * Revolutions of the first) / revolutions of the second.

    = (49 * 1860) / 620

    = 147

    Thus; the diameter of the second pulley is 147.
  2. 4 September, 00:03
    0
    You would most likely use the formula pi (d)
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