ROTATIONAL MOTION Quiz

• The body is in free fall
• The body is symmetric about the rotation axis
• The angular velocity is zero
• There is no external torque

• It has no role
• It causes L to be perpendicular to ω
• Symmetry ensures that L is parallel to ω
• It reduces moment of inertia

• Because OC is zero
• Because v is zero
• Because it is parallel to gravity
• Because OC and v define a plane perpendicular to the axis

• Radial distance from origin
• Angular displacement
• Perpendicular distance from the axis of rotation
• Linear velocity component

• L_z = I / ω
• L_z = I ω
• L_z = I ω²
• L_z = m I ω