154_Physics ProblemsTechnical Physics

154_Physics ProblemsTechnical Physics - 156 The Laws of...

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156 The Laws of Motion ANSWERS TO EVEN PROBLEMS P5.2 166 10 6 . × N forward P5.42 152 ft P5.44 (a) 231 . m s 2 down for m 1 , left for m 2 and up for m 3 ; (b) 30.0 N and 24.2 N P5.4 (a) vt 2 ; (b) Fv gt F g g F H G I K J + ±± ij P5.46 Any value between 31.7 N and 48.6 N P5.6 (a) 447 10 15 . × ms 2 away from the wall; (b) 209 10 10 . × N toward the wall P5.48 72.0 N P5.8 (a) 534 N down; (b) 54.5 kg P5.50 6.84 m P5.10 2.55 N for an 88.7 kg person P5.52 (a) 3.00 s; (b) 20.1 m; (c) 18 0 9 00 . ± . ± ej m P5.12 16 3 14 6 . ± . ± + N P5.54 (a) 200 2 . m s to the right; (b) 8.00 N right on 4 kg; P5.14 (a) 181 ° ; (b) 11.2 kg; (c) 37 5 . ms ; 6.00 N right on 3 kg; 4 N right on 2 kg; (d) −− 37 5 0 893 . ± . ± (c) 8.00 N between 4 kg and 3 kg; 14.0 N between 2 kg and 3 kg; (d) see the solution P5.16 112 N P5.56 1.18 kN P5.18 T 1 296 = N; T 2 163 = T 3 325 = N P5.58 (a) 490 . m s 2 ; (b) 313 . m s at 30.0 ° below the horizontal; (c) 1.35 m; (d) 1.14 s; (e) No P5.20 (a) see the solution; (b) 1.79 N P5.22 (a) 254 s 2 down the incline; P5.60 (a) and (b) see the solution; (c) 357 N; (b) 318 s (d) see the solution; (e) 1.20 P5.24 see the solution; 630 m s 2 ; 31.5 N P5.62 see the solution;
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