05_InstSolManual_PDF_Part6

05_InstSolManual_PDF_Part6 - (c) gives and n 5 T sin u 5 1...

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5.12. Set Up: Use coordinates with upward and to the right. Label the tensions and Solve: (a) The free-body diagram for the officer is given in Figure 5.12. Each tension is replaced by its x and y components. Figure 5.12 (b) gives gives and Then 5.13. Set Up: Apply to the ball. Since the post is frictionless, the force it exerts on the ball is a horizontal normal force. Use coordinates with upward and to the right. Solve: The angle between the string and post can be calculated from Figure 5.13a. l is the length of the string and r is the radius of the ball. and Figure 5.13 (a) The free-body diagram of the ball is given in Figure 5.13b. (b) gives and
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Unformatted text preview: (c) gives and n 5 T sin u 5 1 2.65 N 2 sin 4.18 5 0.193 N. T sin u 2 n 5 g F x 5 ma x T 5 mg cos u 5 1 0.270 kg 21 9.80 m / s 2 2 cos 4.18 5 2.65 N T cos u 2 mg 5 g F y 5 ma y ( b ) ( a ) l u r r T T cos u T sin u x y mg u n a 5 u 5 4.18. sin u 5 r r 1 l 5 0.110 m 1.40 m 1 0.110 m u 1 x 1 y g F S 5 m a S T 2 5 590 N. T 1 5 482 N. T 1 1 sin 35 1 cos 35 tan 48 2 5 w T 1 sin 35 1 T 2 sin 48 2 w 5 g F y 5 T 2 5 1 cos 35 cos 48 2 T 1 T 2 cos 48 2 T 1 cos 35 5 0; g F x 5 T 2 sin48 T 1 sin35 T 1 T 2 T 2 cos48 T 1 cos35 x y w 35 48 T 2 . T 1 1 x 1 y 5-6 Chapter 5...
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