ROTATIONAL MOTION Quiz

• To increase speed
• To reduce color intensity
• To ensure stability and proper weight distribution
• To improve radio reception

• It is a random average
• It gives total energy
• The centre of mass is a mass-weighted average of particle positions
• It calculates force

• It orbits one star
• It accelerates
• It remains at rest or moves uniformly if no external force acts
• It disappears

• It shifts to the origin
• It doubles
• It remains unchanged
• It becomes zero

• Only if all particles are at rest
• Only if symmetric
• Zero net external force and zero initial velocity
• Only in space