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physic

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A 69-cm-diameter wheel accelerates uniformly about its center from 150rpm to 320rpm in 4.4s . Determine angular acceleration?

  • physic - ,

    change in rpm = 170

    170 rev/min *1 min/60 s * 2 pi radians/rev = 17.8 radians/second change
    which is delta omega

    alpha = change in omega/ change in time
    -17.8 radians/second / 4.4 seconds
    = 4.05 radians/second^2

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