176_Physics ProblemsTechnical Physics

176_Physics ProblemsTechnical Physics - 178 Circular Motion...

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178 Circular Motion and Other Applications of Newton’s Laws Additional Problems *P6.50 When the cloth is at a lower angle θ , the radial component of Fm a = reads nm g mv r += sin 2 . At 68 0 . , the normal force drops to zero and g v r sin68 2 °= . R 68° p mg p mg cos68° mg sin68° FIG. P6.50 vr g = ° = sin . . sin . 68 0 33 9 8 68 1 73 m m s m s 2 af ej The rate of revolution is angular speed = F H G I K J F H G I K J == 173 1 2 2 20 3 3 0835 501 . . .. ms rev m rev s rev min bg π r r . *P6.51 (a) v = F H G I K J F H G I K J = 30 1 1000 833 km h h 3600 s m 1 km . a yy = : +− =− g mv r 2 nmg v
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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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