APFIVE Angular Acceleration of an L-Shaped System
Two identical uniform rods, each of mass $$M$$ and length $$L$$, are welded together at their ends to form a perpendicular L-shape. A torque $$\tau$$ is applied at the welded joint, perpendicular to the plane containing the L-shape. What is the angular acceleration $$\alpha$$ of the system about an axis through the welded joint?
A
$$\frac{12\tau}{ML^2}$$
B
$$\frac{\tau}{ML^2}$$
C
$$\frac{3\tau}{2ML^2}$$
D
$$\frac{12\tau}{11ML^2}$$
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