298_Physics ProblemsTechnical Physics

298_Physics ProblemsTechnical Physics - 300 *P10.39...

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300 Rotation of a Rigid Object About a Fixed Axis *P10.39 τα α == IM R 1 2 2 −+ = F H G I K J = 135 0 230 0 230 1 2 80 125 2 167 21 5 2 N m m k g m r a d s N 2 .. . . . a f a f bg ej T T Section 10.8 Work, Power, and Energy in Rotational Motion P10.40 The moment of inertia of a thin rod about an axis through one end is L = 1 3 2 . The total rotational kinetic energy is given as KI I Rh hm m =+ 1 2 1 2 22 ωω with I mL h hh = 2 2 3 60 0 2 70 3 146 kg m kg m 2 af and I m mm =⋅ 2 2 3 100 3 675 kg 4.50 m kg m 2 In addition, ω π h = F H G I K J 21 145 10 4 rad 12 h h 3600 s rad s . while m = F H G I K J 175 10 3 rad 1 h h rad s . Therefore, K R = × −− 1 2 146 1 45 10 1 2 675 1 75 10 1 04 10 4 2 3 2 3 . J *P10.41 The power output of the bus is P = E t where EI M R 1 2 1 2 1 2 2 is the stored energy and t x v = is the time it can roll. Then
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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