13. Rotational Inertia & Energy
Torque with Kinematic Equations
Multiple Choice
Multiple ChoiceA system is made of two small, 3 kg masses attached to the ends of a 5 kg, 4 m long, thin rod, as shown. The system is free to rotate about an axis perpendicular to the rod and through its center. Two forces, both of magnitude F and perpendicular to the rod, are applied as shown below. What must the value of F be to the system from rest to 10 rad/s in exactly 8 complete revolutions?
A
3.8 N
B
6.0 N
C
7.7 N
D
15.4 N
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