Net Torque on a Combined System
At time t = 2 s, the slope of the angular momentum-versus-time graph for rotating System A is +5 N·m, and for rotating System B, it is -3 N·m. If these two systems are treated as a single combined system, C, what is the net torque on System C at t = 2 s?
A
-2 N·m
B
+2 N·m
C
+8 N·m
D
+15 N·m
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