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The three masses in the figure lie in a horizontal plane. They are fixed at the corners of
an isosceles triangle with light rigid rods. Assume the masses are point sized objects.
a. Find the center of mass position relative to the origin.
b. Find the moment of inertia of the masses about an axis parallel
to the z-axis and located at the midpoint of BC.
c. Find the moment of inertia of the masses about an axis parallel
to the x-axis and passing the midpoints of sides AB and AC

200 g 10 cm 10 cm 12 cm 100 g 100 g

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Answer #1

Ms = 200-4 m2 = 100g 0,0 M2 100 (12,0) a) let x,y are coordinates of centre of mass. relative to miau + m2 2 + mig mitmz+m3 1

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