College Physics Quiz
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ROTATION: TORQUE, ANGULAR MOMENTUM & DYNAMICS
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A flywheel with moment of inertia I=0.5 kg⋅m2 is initially rotating at 10 rad/s. A constant braking torque is applied for 4 seconds, after which the flywheel rotates at 2 rad/s in the same direction. During the next 2 seconds, the braking torque is removed and a driving torque of 3 N⋅m is applied. What is the angular acceleration during this second phase?
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