APFIVE Angular Impulse from Time-Varying Torque
A system experiences a torque that varies with time according to τ(t) = (4.0 N·m)e^(-t/2) for t ≥ 0. What is the total angular impulse delivered to the system from t = 0 to t = ∞?
A
2.0 N·m·s
B
4.0 N·m·s
C
∞ N·m·s
D
8.0 N·m·s
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