ROTATIONAL MOTION

How does Newton’s third law ensure internal forces do not affect total torque?

• They double the torque
• They increase rotation
• Internal forces act in equal and opposite pairs with zero net torque
• They vanish

Why is the moment of inertia not mentioned in the given text on equilibrium?

• It is unimportant
• The author forgot
• The text focuses on force and torque balance, not rotational inertia
• It is only for liquids

What is the implication of constant angular momentum for a satellite in orbit?

• It falls down
• Its speed is always the same
• Its areal velocity remains constant
• It changes color

How does the vector nature of torque affect rotational equilibrium?

• Vectors are not important
• It only matters in 2D
• It requires balance in all three spatial directions
• It reduces to scalar

What is the role of the center of mass in rotational motion under external forces?

• It resists all motion
• It disappears under force
• It moves as if all external forces act at that point
• It spins always