ROTATIONAL MOTION

What is the main purpose of using a narrow-tipped object in the CG experiment?

• To make it look scientific
• To reduce cost
• To identify a precise point of balance
• To increase friction

Is the centre of gravity always within the physical material of an object?

• Yes, always
• No, but it vanishes
• No, it can be in empty space
• Yes, except in water

What would happen if the pencil tip were flat instead of narrow?

• It would float
• It would spin
• It would be harder to locate the exact CG
• It would become heavier

How does the principle of torque apply to the balancing experiment?

• Torque is absent
• Only one torque acts
• Torques due to gravity on all particles cancel out at CG
• Torque increases weight

Why is the centre of gravity important in sports?

• It increases speed
• It reduces fatigue
• It affects balance, agility, and performance
• It changes uniform color