ROTATIONAL MOTION

What is the moment of inertia of a flywheel mostly dependent on?

• Material density
• Mass at center
• Size of axle
• Distribution of mass near the rim

Which law is conserved in rotational motion in absence of external torque?

• Linear momentum
• Energy
• Torque
• Angular momentum

What is the moment of inertia of a system of four point masses M at the corners of a square of side L, about an axis through center and perpendicular to plane?

• M L²
• 4 M L²
• 2 M L²
• M L²/2

How does the moment of inertia of a body change if it rotates about a different axis?

• It remains constant
• It always increases
• It changes depending on the axis
• It becomes zero

What is the rotational analog of force?

• Energy
• Power
• Torque
• Impulse