Ch. 12 Homework, Phy 131, Fall 1997, Tulane

Note: ^ denotes power, eg. x^2 = x*x, i.e. x squared 
12.1   (a) 7.96 Hz    (b) 0.13 s      (c) 0.1 m          
       (d) 5 m/s      (e) 250 m/s^2   (f) at 0.0325 s, a=0

12.8   (a) 2 Hz       (b) 0.5 s     (c) 5 cm
       (d) 0.125 s, negative direction

12.16  (a) 0.32 Hz    (b) 3.14 s    (c) x = 40 cos(2t)  (cm)

12.18  25 J

12.24  (a) 0.13 J     (b) -0.32 J   (c) 0.45 J
       (d) 0.13 J

12.41  0.42 J

12.46  (a) 1.57 m/s   (b) 1.23 m/s^2 
       (c) Wmax = 882 N, Wmin = 686 N
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