04_InstSolManual_PDF_Part12 - 4-12 Chapter 4 4.43 Set Up...

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4.43. Set Up: Your mass is Both you and the package have the same acceleration as the elevator. Take to be upward, in the direction of the acceleration of the elevator. Solve: (a) Your free-body diagram is shown in Figure 4.43a. n is the scale reading. gives and Figure 4.43 (b) The free-body diagram for the package is given in Figure 4.43b. gives so Reflect: The objects accelerate upward so for each object the upward force is greater than the downward force. 4.44. Set Up: Take to be downward, in the direction of the acceleration of the elevator. Solve: (a) Your free-body diagram is shown in Figure 4.44a. gives so Figure 4.44 (b) The free-body diagram for the package is given in Figure 4.44b. gives and 4.45. Set Up: Take to be upward. The astronaut and the shuttle will have the same acceleration. Solve: (a) gives (b) The free-body diagram for the astronaut is shown in Figure 4.45.
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