ROTATIONAL MOTION Quiz

• At the centre of the circle
• At a point on the axis of symmetry, away from the diameter
• At the midpoint of the arc
• On the diameter

• Its full mass
• Zero
• mi times origin vector
• Undefined

• It eliminates the need for mass
• It is only for 2D systems
• It provides a compact and general representation of the centre of mass
• It assumes zero gravity

• It remains fixed
• It translates by the same vector
• It doubles
• It becomes zero

• At one vertex
• At the centroid, which is at a distance a/√3 from each vertex
• At the circumcentre, distance a/√2
• At the midpoint of a side