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Homework Statement
The rectangle shown has a mass, m. The sides are made of uniform thin wire. The short side is of length a, and the long side is of length b. If m = 5.50 g, a = 0.05 cm and b = 0.1 cm, what is the moment of rotational inertia about the axis indicated?
(ignore the x's)
axis


xxxxxxxxxxxxxxxxx side a = 0.05cm
xxxxxxxxxxxxxxxxx

 side b = .1 cm
Homework Equations
[tex]I = \frac{1}{3}mL^2[/tex]
The Attempt at a Solution
[tex]I = \frac{1}{3}(0.0055kg*.001^2) = 1.833x10^{9}[/tex]
Can't I treat this as a high density rod along the bottom of the rectangle since the height of the particles do not matter?
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