ROTATIONAL MOTION

What is the implication of Lx = K1 in a physical system?

• The system is stationary
• The net force along x is zero
• The x-component of angular momentum does not change with time
• The angular speed is maximum along x

How many scalar equations are equivalent to the vector equation L = constant?

• One
• Two
• Three
• Four

What does Eq. (6.29a) represent?

• Energy conservation
• Linear momentum conservation
• Rotational kinematics
• Conservation of total angular momentum when τ_ext = 0

What is the role of the origin in calculating angular momentum and torque?

• Any origin gives same result
• Only inertial origins are valid
• Both must be calculated about the same point
• The origin must be at rest

What happens to the total angular momentum if τ_ext = 0?

• It increases gradually
• It oscillates in space
• It remains constant
• It becomes zero