ROTATIONAL MOTION

Why is the cross product used in angular momentum definition?

• To add vectors
• Because it measures speed
• Because it captures rotational effects based on perpendicular components
• To simplify calculations

What is the significance of the expression m r⊥² ω k̂?

• Linear momentum
• Kinetic energy
• Torque
• It represents the axial angular momentum of a particle

What is the effect of asymmetry on rotational stability?

• Improves stability
• No effect
• It causes wobbling due to non-zero L_⊥
• Reduces angular speed

What determines the direction of the angular velocity vector ω?

• Mass distribution
• Linear velocity
• Direction of force
• Right-hand rule based on rotation direction

How does the angular momentum of a particle differ from that of a rigid body?

• They are identical
• For translational motion only
• For a rigid body, it is the sum of individual particle contributions
• It depends only on center of mass