Physics 121 Lecture Summary

Angular Acceleration (10.1) Average angular acceleration Units = radians/second2 = rad./s2 = s-2. remember angles are dimensionless (see angular position) if Δω > 0 then α = + if Δω < 0 then α = - if ω and α have same sign then rotation is increasing. if ω and α have opposite sign then rotation is decreasing. Instantaneous angular acceleration, α ................
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