1. A 400-g mass vibrates according to the equation y = 0.45 m sin 8.4 t, where y is in meters, and t in seconds. Determine: (p. 366) (a) the amplitude, A = m, (b) the period, T = (p. 369) rad/s Hz, (c) the frequency, f = (n. 371 Ea. (15-15)) (d) the angular frequency, o = (Hooke's Law)
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