APFIVE Angular Velocity from Time-Varying Torque
A wheel initially rotating at 5 rad/s experiences a time-varying torque given by τ(t) = (2 - t) N·m for 0 ≤ t ≤ 4 s. If the wheel’s moment of inertia is 2 kg·m², what is its angular velocity at t = 4 s?
A
3 rad/s
B
1 rad/s
C
7 rad/s
D
5 rad/s
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