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Math Help - Linear Velocity

  1. #1
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    Smile Linear Velocity

    A pulley of radius 15 cm turns at 8 revolutions per second. What is the linear velocity of the belt driving the pulley in meters per second?

    Here is the way I did this--am I correct?


    v = 2pi r/T

    v = 2pi (15)/8

    v = 94.2/8

    v = 11.8
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  2. #2
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    incorrect ...

    T is not 8 ... 8 revolutions per second means T = \frac{1}{8} sec.

    also, you need to pay attention to your units ... 15 cm = .15 m
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  3. #3
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    Thanks to Skeeter

    12/5/08

    Hi Skeeter--

    Thanks for your help on the linear velocity problem.

    Joanie
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