ROTATIONAL MOTION

How does the moment of inertia of a body change if its mass is doubled while keeping the shape and axis of rotation the same?

• It halves
• It doubles
• It becomes four times
• It remains unchanged

What is the primary reason a flywheel helps in ensuring smooth motion in engines?

• It reduces friction in moving parts
• It resists sudden changes in rotational speed due to its large moment of inertia
• It converts heat energy into mechanical energy
• It increases the engine's temperature

How does the moment of inertia of a body affect its rotational equilibrium?

• It determines the equilibrium position
• It does not affect static equilibrium but affects dynamic response
• It prevents any rotation
• It makes equilibrium unstable

What is the radius of gyration used for in physics?

• To measure electrical resistance
• To characterize the distribution of mass in a rotating body
• To calculate velocity
• To determine pressure

Which of the following best describes the inertia of rotation?

• Linear momentum
• Torque
• Angular velocity
• Moment of inertia