A disk has a moment of inertia of 3.0 X 10-4 kg•m2 and rotates with an angular speed of 3.5 rad/sec. What net torque must be applied to bring it to rest within 3 s?
a. 4.5 x 10-3 N•m
b. 7.5 x 10-4 N•m
c. 3.5 x 10-4 N•m
d. 5.0 x 10-4 N•m
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