ROTATIONAL MOTION

What is the consequence of fixed axis on rotational degrees of freedom?

• Three rotational degrees
• Two rotational degrees
• Only one rotational degree of freedom
• No rotational freedom

What is the time rate of change of angular momentum equal to?

• Force
• Linear momentum
• External torque
• Acceleration

How does an acrobat control rotation in mid-air?

• By pushing air
• By rotating limbs
• By changing weight
• By changing body configuration

What is the main assumption in τ = Iα?

• Torque is zero
• ω is constant
• Moment of inertia is constant
• α is zero

Which law is analogous to conservation of angular momentum?

• Newton’s first law
• Conservation of energy
• Conservation of linear momentum
• F = ma