ROTATIONAL MOTION Quiz

• By changing body weight
• By pushing off water vapor
• By rotating limbs independently
• By changing body shape to alter moment of inertia

• By pushing against air
• By increasing body mass
• By using internal motors
• By pulling limbs close to reduce moment of inertia

• Air resistance increases
• Friction increases
• Muscular force opposes motion
• Moment of inertia increases, decreasing angular speed to conserve angular momentum

• It gradually decreases
• It increases
• It changes direction randomly
• It remains constant

• They are too weak
• They act at the center
• They do not produce rotation
• They act along the line joining particles and their torques cancel in pairs