Moment of Inertia Quiz

The moment of inertia :

• is synonymous with mass
• does not depend on where the mass is located
• resistance to a change in rotational inertia
• more resistance to change = less inertia

What is the unit of moment of inertia about any parallel axis?

• mm4

• m2

• kg.m2

• kg.m

How can the moment of inertia about any parallel axis be calculated?

• By using the radius of gyration

• By using the centroidal axis

• By using the perpendicular distance between axes

• By using the mass moment of inertia

Formula for Moment of Inertia about x-axis (parallel axis theorem) ?

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Determine the moment of inertia about the x-axis for the rectangle area shown in the figure.

• 90,000 mm4

• 85,000 mm4

• 92,000 mm4

Determine the moment of inertia about the x-axis for the triangle area shown in the figure.

• 25,000 mm4

• 30,000 mm4

• 45,000 mm4

Determine the moment of inertia about the y-axis for the circle area shown in the figure.

• 125,663.706 mm4

• 133,517.688 mm4

• 134,553.688 mm4