Three Particles,each of Which Has a Mass of 80 G,are

question 108

Multiple Choice

Three particles,each of which has a mass of 80 g,are positioned at the vertices of an equilateral triangle with sides of length 60 cm.The particles are connected by rods of negligible mass.What is the moment of inertia of this rigid body about an axis that is parallel to one side of the triangle and passes through the respective midpoints of the other two sides?

• A)0.018 kg.m²
• B)0.020 kg.m²
• C)0.016 kg.m²
• D)0.022 kg.m²
• E)0.032 kg.m²

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