ROTATIONAL MOTION

What does the symbol ∑ represent in the context of centre of mass calculations?

• Integration over volume
• Product of masses
• Summation over all particles
• Difference of coordinates

Where is the centre of mass located for two particles of equal mass placed along a straight line?

• At the position of the heavier particle
• At the position of the lighter particle
• Exactly midway between them
• At infinity

What is the motion of a rigid body when it rolls without slipping?

• Pure translation
• Pure rotation
• Combination of translation and rotation
• Vibration

What is the main purpose of defining translational trajectories Tr1 and Tr2?

• To measure speed
• To indicate temperature
• To show air resistance
• To show the path of the center of mass

What is the motion of a particle not on the axis in rotational motion?

• It stays still
• It moves in a straight line
• It moves randomly
• It moves in a circular path