Three equal masses m are located at the vertices of an equilateral triangle of side L
Chapter 10, Problem 29(choose chapter or problem)
Three equal masses m are located at the vertices of an equilateral triangle of side L, connected by rods of negligible mass. Find expressions for the rotational inertia of this object (a) about an axis through the center of the triangle and perpendicular to its plane and (b) about an axis that passes through one vertex and the midpoint of the opposite side.
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