APFIVE Angular Acceleration of Connected Gears
Two identical gears, each with moment of inertia $$I$$, are connected so that driving one also rotates the other. If a constant torque $$\tau$$ is applied to the driving gear, what is the angular acceleration $$\alpha$$ of the driven gear?
A
$$2\tau/I$$
B
$$\tau/I$$
C
$$\tau/2I$$
D
$$\tau/4I$$
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