Лаг1989 задача №4.7

Find the moment of inertia J of an equilateral wire triangle with side a = 0.3 m: a) relative to the axis lying in the plane of the triangle and passing through its vertex parallel to the side opposite the vertex; b) relative to the axis coinciding with one of the sides of the triangle. The mass of the triangle m = 54 g is evenly distributed along the length of the wire.

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