296_Physics ProblemsTechnical Physics

296_Physics ProblemsTechnical Physics - 298 P10.33 Rotation...

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298 Rotation of a Rigid Object About a Fixed Axis P10.33 In the previous problem we calculated the maximum torque that can be applied without skidding to be 882 N · m. This same torque is to be applied by the frictional force, f , between the brake pad and the rotor for this wheel. Since the wheel is slipping against the brake pad, we use the coefficient of kinetic friction to calculate the normal force. τµ == fr n r k bg , so n r k = τ µ 882 0220 802 10 802 3 Nm 0.500 m N k N af a f . .. Section 10.7 Relationship Between Torque and Angular Acceleration P10.34 (a) IM R × = × ⋅ −− 1 2 1 2 2 00 7 00 10 4 90 10 22 2 3 . kg m kg m 2 ej α ω π × = = = I t t 0600 490 10 122 1200 122 103 3 2 60 . . . rad s s 2 ch (b) θα = = 1 2 1 2 122 1 03 64 7 10 3 2 2 t rad s s rad rev a f . P10.35 m = 0750 . k g , F = 0800 N (a) = rF 30 0 0 800 24 0 . m N N m a f (b) = = I rF mr 24 0 0750300 00356 . . a f rad s 2 (c) ar t = 00356300 107 . ms 2 FIG. P10.35
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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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