A system consists of a disk of mass 2.0 kg and radius 50 cm upon which is mounted an annular cylinder of mass 1.0 kg with inner radius 20 cm and outer radius 30 cm (see below). The system rotates about an axis through the center of the disk and annular cylinder at 10 rev/s. (a) What is the moment of inertia of the system? (b) What is its rotational kinetic energy? A a) 0.315 kg*m? b) 621.8J B a) 0.512 kg*m2 b) 524.8) C a) 0.854 kg*m2 b) 412.8) D a) 0.674 kg*m2 b) 354.8 J

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A system consists of a disk of mass 2.0 kg and radius 50 cm upon which is mounted an annular cylinder of mass 1.0 kg with inner
radius 20 cm and outer radius 30 cm (see below). The system rotates about an axis through the center of the disk and annular
cylinder at 10 rev/s. (a) What is the moment of inertia of the system? (b) What is its rotational kinetic energy?
A a) 0.315 kg*m? b) 621.8J
B a) 0.512 kg*m2
b) 524.8)
C a) 0.854 kg*m2
b) 412.8)
D a) 0.674 kg*m2
b) 354.8 )
Transcribed Image Text:A system consists of a disk of mass 2.0 kg and radius 50 cm upon which is mounted an annular cylinder of mass 1.0 kg with inner radius 20 cm and outer radius 30 cm (see below). The system rotates about an axis through the center of the disk and annular cylinder at 10 rev/s. (a) What is the moment of inertia of the system? (b) What is its rotational kinetic energy? A a) 0.315 kg*m? b) 621.8J B a) 0.512 kg*m2 b) 524.8) C a) 0.854 kg*m2 b) 412.8) D a) 0.674 kg*m2 b) 354.8 )
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