ROTATIONAL MOTION

How does the angular momentum of a particle compare with its linear momentum in terms of direction relative to motion?

• Both are always parallel
• p and v are always parallel, but l and ω are not necessarily parallel
• They are always perpendicular
• l and ω are always parallel

For a single particle in rotation, is angular momentum always parallel to angular velocity?

• Yes, always
• Only in translational motion
• No, not necessarily
• Yes, for point masses

What is denoted by l_z in the context of angular momentum about a fixed axis?

• Total angular momentum
• The component of l along the z-axis
• Angular momentum about origin
• Magnitude of linear momentum

If OC × v is calculated for a rotating particle, what is its orientation relative to the fixed axis?

• Parallel to the axis
• At 45° to the axis
• Perpendicular to the fixed axis
• Along the velocity vector

What is the direction of CP × v for a particle in rotation about a fixed axis?

• Perpendicular to the plane of motion
• Opposite to angular velocity
• Parallel to the fixed axis
• Tangential to the path