PHI 102 #1

# PHI 102 #1 - 17(a If m 2m T = 2.83s(b If m 1/2m T = 1.41s(c...

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PHI 102 - M001 Zhang, Jiayi Spring 2011 02/01/2011 Chapter 14. 2: 1. T= 1/f = 1/440Hz = 2.27ms Chapter 14. 3: 9. Amplitude = 20cm Frequency = 1/T = 1/4s = 0.25Hz 10. x(cm) 6 0 t (s) 2 4 -6 11. (a). The maximum displacement = 30cm (b). The maximum velocity = 2πfA = 2π(1.2Hz)(0.3m) = 2.26m/s (c). The maximum acceleration = (2πf) 2 A = [2π(1.2Hz)] 2 (0.3m) = 17m/s 2 Chapter 14. 4:

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Unformatted text preview: 17. (a). If m 2m T = 2.83s (b). If m 1/2m T = 1.41s (c). If A 2A No change. (d). If k 2k T = 1.41s See Next Page m k f π 2 1 = m k T = 2 m k T / 2 = 21. (a). = 2π/ = 1s (b). V max = 2πfA = 2π(1/T)A = 2π(1/1s)0.1m = 0.63m/s (c). E = kA 2 /2 = 20N/m(0.1m) 2 /2 = 0.10J m k f π 2 1 = m k T / 2 = g m N 507 / 20...
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