05_InstSolManual_PDF_Part8

05_InstSolManual_PDF_Part8 - F is the force the air bag...

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5.16. Set Up: For constant speed in either direction, Take perpendicular to the incline and parallel to the incline. Solve: (a) The free-body diagram for the piano is given in Figure 5.16a. Since There is a compo- nent of w down the incline, so the push P exerted by the man must be directed up the incline. Figure 5.16 gives and (b) The piano has just as in part (a), so (c) The free-body diagram is shown in Figure 5.16b. Now has a component directed up the incline. gives 5.17. Set Up: Use coordinates where the direction is in the direction of the acceleration, opposite to the initial velocity of the car. Solve: (a) The free-body diagram for the person is given in Figure 5.17.
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Unformatted text preview: F is the force the air bag exerts and n is the normal force from the car seat. gives Figure 5.17 (b) so F 5 60 w . F w 5 F mg 5 4.41 3 10 4 N 1 75 kg 21 9.80 m / s 2 2 5 60, x y mg n F a v F 5 ma 5 1 75 kg 21 588 m / s 2 2 5 4.41 3 10 4 N g F x 5 ma x 1 x 60 g 5 588 m / s 2 . P 5 mg tan u 5 1 180 kg 21 9.80 m / s 2 2 tan 11.0° 5 343 N. P cos u 2 mg sin u 5 0. g F x 5 ma x P cos u P S P 5 337 N. a 5 P 5 mg sin a 5 1 180 kg 21 9.80 m / s 2 2 sin 11.0° 5 337 N. P 2 mg sin a 5 g F x 5 ma x ( a ) mg mg sin a mg cos u P x n y u u ( b ) mg mg sin u P cos u P sin u mg cos u x n y P u g F x 5 0. a 5 0, 1 x 1 y a 5 0. 5-8 Chapter 5...
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This note was uploaded on 03/06/2009 for the course PHYS 114 taught by Professor Shoberg during the Spring '07 term at Pittsburg State Uiversity.

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