16. Angular Momentum
Intro to Angular Momentum
Multiple Choice
Multiple ChoiceA composite disc is built from a solid disc and a concentric, thick-walled hoop, as shown below. The inner disc has mass 4 kg and radius 2 m. The outer disc (thick-walled) has mass 5 kg, inner radius 2 m, and outer radius 3 m. The two discs spin together and complete one revolution every 3 s. Calculate the system's angular momentum about its central axis.
A
64 kg•m2/s
B
85 kg•m2/s
C
102 kg•m2/s
D
148 kg•m2/s
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