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Pre cal.

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Determine the linear velocity of a point rotating at 25 revolutions per minute at a distance of 2 feet from the center of the rotating object. Give answer in feet/sec/


25/60 = 5/12 revs per second
Convert rev per second to rad/sec
5/12*2*pi = 2.618 rad/sec
at a distance of 2 feet:
2*2.618 = 5.236 feet/sec

  • Pre cal. - ,

    arc length = r(theta)
    a = 2(theta)
    da/dt = 2d(theta)/dt
    = 2(2.618) = 5.236 feet/sec

    you are correct

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