ROTATIONAL MOTION

How does the radius of gyration of a body change if it is scaled up uniformly?

• It decreases
• It remains the same
• It increases proportionally with size
• It becomes zero

Which of the following best describes the physical significance of moment of inertia?

• It measures the total weight
• It quantifies how mass is distributed relative to the axis of rotation
• It determines the color of the object
• It indicates the temperature

What is the moment of inertia of a system of two point masses, each M, separated by distance d, about an axis through their midpoint perpendicular to the line joining them?

• Md²/4
• Md²/2
• Md²
• 2Md²

For a given torque, what happens to angular acceleration if the moment of inertia is halved?

• It halves
• It remains the same
• It doubles
• It becomes zero

What is the rotational analog of mass in linear motion?

• Velocity
• Force
• Acceleration
• Moment of inertia