ROTATIONAL MOTION

What is the primary reason the moment of inertia is not a fixed property of a body?

• Because mass changes
• Because it depends on the axis of rotation
• Because temperature affects it
• Because gravity alters it

How is the moment of inertia of a continuous body calculated?

• By multiplying mass and radius
• By averaging all distances
• By integrating r² dm over the entire body
• By dividing mass by area

What is the effect of a larger moment of inertia on the rotational kinetic energy at a given angular velocity?

• It decreases the energy
• It has no effect
• It increases the kinetic energy
• It makes energy negative

For a thin ring, what is the radius of gyration about its central axis?

• R/2
• R
• 2R
• R/√2

What is the moment of inertia of a rectangular lamina about an axis through its center and parallel to one side?

• (1/12)Ma²
• (1/12)Mb² where b is the perpendicular dimension
• (1/6)ML²
• Not mentioned