ROTATIONAL MOTION

What is the main assumption in Eq. (6.43c)?

• Linear motion
• Free fall
• Rotation about a fixed axis
• Constant velocity

What is the direction of Lz in right-handed coordinate systems?

• Along -î
• Along +ĵ
• Along +k̂ for counterclockwise rotation
• Opposite to ω

How does an increase in I affect ω when τ = 0?

• ω increases
• ω remains same
• ω decreases to conserve angular momentum
• ω becomes zero

What is the implication of Lz = Iω in rotational dynamics?

• It measures force
• It calculates energy
• It links rotational inertia and motion
• It defines time

What is the role of the pivot in the swivel chair?

• To add torque
• To increase weight
• To provide a fixed axis of rotation
• To stop rotation