12_P02InstructorSolution - 12.2 Model Assume constant...

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12.2. Model: Assume constant angular acceleration. Solve: (a) The final angular velocity is () f 2 r a d m i n 2000 rpm 209.4 rad/s. rev 60 s π ω ⎛⎞ == ⎜⎟ ⎝⎠ The definition of angular acceleration gives us fi 209.4 rad/s 0 rad/s 419 rad/s 0.50 s tt ωωω α Δ− = = ΔΔ
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