Moment of Inertia basics

What is the other name for the moment of inertia?

• First Moment of area
• Second Moment of area
• Couple
• torque (optional)

Which of these is the correct expression for polar moment of inertia?

• Integral of r^2dA where r is the distance to the element dA
• Integral of r^2dr
• Differential of r^2dA
• Differential of r^2dr

Which of the following are not the units of moment of inertia

• m^4
• cm^4
• mm^4
• m^2

State the Parallel Axis Theorem

What is the SI unit for the radius of gyration?

What is the moment of inertia for a rectangular area

The axis about which moment of area is taken is known as

• Axis of area
• Axis of moment
• Axis of reference
• Axis of rotation

What is MOI

• mI^2
• maI
• ar^2
• None

What is the formula of radius of gyration?

• k^2=I/A
• k^2=I^2/A
• k^2=I^2/A^2
• k^2=(I/A)^(0.5)

What is the formula of theorem of perpendicular axis?

• Izz=Ixx-Iyy
• Izz=Ixx+Ah^2
• Izz-Ixx=Iyy
• None of the above