05_InstSolManual_PDF_Part5

05_InstSolManual_PDF_Part5 - Applications of Newtons Laws...

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5.10. Set Up: Use coordinates where the is along the dashed line in the figure in the problem. The free-body diagram for the pulley attached to the foot is given in Figure 5.10. The tension in the cable is the same all along the cable and is equal to W . The tension forces have been replaced by their x and y components. Figure 5.10 Solve: gives and 5.11. Set Up: Use coordinates with upward and to the right. Call the objects A and B , with and Label the tensions in the three wires and Solve: (a) The free-body diagrams for each object are given in Figure 5.11. has been replaced by its x and y components. Figure 5.11 (b) for B gives and for A gives so for A gives and (c) The tensions are unaffected by the length of the wires, so long as the third wire still makes a
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Unformatted text preview: angle with one wall. Reflect: equals the combined weight of both objects, 489 N. T 3 cos 53° 53° T 1 5 649 N. T 3 sin 53° 2 T 1 5 g F x 5 T 3 5 T 2 1 w A cos 53° 5 813 N. T 3 cos 53° 2 T 2 2 w A 5 g F y 5 T 2 5 m B g 5 314 N. T 2 2 w B 5 g F y 5 T 2 T 1 x y T 3 cos53 ° T 2 T 3 T 3 sin53 ° x y w B 5 m B g w A 53 ° T 3 T 3 . T 2 , T 1 , m B 5 32 kg. w A 5 175 N 1 x 1 y W 5 15 N. T 5 F T 2 cos 35° 5 25 N 2 cos 35° 5 15 N. 2 T cos 35° 2 F T 5 g F x 5 35° 35° y T x F T T 1 x Applications of Newton’s Laws 5-5...
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• Spring '07
• Shoberg
• Force, Cos, Equals sign, T1 wA wB

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