ROTATIONAL MOTION

What is the direction of the net gravitational force on a body?

• Upward
• Sideways
• Random
• Downward through the centre of gravity

How does the height of the centre of gravity affect stability?

• Higher CG is always better
• CG height has no effect
• Lower CG increases stability
• It only matters for airplanes

What is the primary factor that determines whether an object will balance on a point?

• The color of the object
• The temperature
• Whether the point of support lies directly below the CG
• The time of day

Can the centre of gravity be determined for liquids?

• No, liquids have no CG
• Yes, and it is always central
• Yes, but it may shift with container shape and movement
• No, because they are wet

Why is the cardboard horizontal when balanced at CG?

• Because of air
• Because it was placed that way
• Because there is no net torque to cause rotation
• Because the pencil is vertical