05_InstSolManual_PDF_Part12

05_InstSolManual_PDF_Part12 - body diagram of the mass is...

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5.25. Set Up: The camera is at rest relative to the train car and has the same horizontal acceleration as the car. Use coordinates with upward and in the direction of motion of the train car. Solve: (a) The free-body-diagram is given in Figure 5.25. The tension T in the strap has been replaced by its x and y components. Figure 5.25 (b) gives gives Combining these two equations to elimi- nate T gives And the y component equation gives Reflect: As a increases there must be a larger horizontal component of T and the angle increases. 5.26. Set Up: The hanging mass is at rest with respect to the cart, so its acceleration equals that of the cart. Use coordinates with in the direction of the acceleration. Solve: (a) Since the speed is increasing the acceleration is in the direction of the motion and is to the right. The free-
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Unformatted text preview: body diagram of the mass is given in Figure 5.26. is to the right and T has been replaced by its x and y components. Figure 5.26 gives and gives and For The accelerometer deflects to the left of the vertical. 17 b 5 17. a 5 3.0 m / s 2 , tan b 5 a g . 1 mg cos b 2 sin b 5 ma T sin b 5 ma . g F x 5 ma x T 5 mg cos b T cos b 2 mg 5 g F y 5 ma y T T cos b T sin b x y mg b a 1 x 1 x f T 5 mg cos f 5 3.00 N cos 12.0 5 3.07 N a 5 g tan f 5 2.08 m / s 2 . T cos f 2 mg 5 0. g F y 5 ma y T sin f 5 ma . g F x 5 ma x T T cos f T sin f x y mg f a f 5 12.0 1 x 1 y 5-12 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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