Question

3. Power in a DHO. The power developed in a mechanical system is force x velocity. Show that the average power dissipated by the damping in a DHO is: (b) Evaluate this expression at o r, the resonant frequency from Problem 2. Show that the average driving power, <Pin is: (Hint: The average of cos2@t-ф) is %.)

Answer 1

C(v) し, 2 vl сь: 브) 2. 2 T C(o)

2 2 2m2 Nau/Jawnegu.hon①ノuua haua 2 2 ,2 i n 4 %2