Which of the following quantities is conserved in a closed system of rotating bo
Practice Questions
Q1
Which of the following quantities is conserved in a closed system of rotating bodies?
Linear momentum
Angular momentum
Kinetic energy
All of the above
Questions & Step-by-Step Solutions
Which of the following quantities is conserved in a closed system of rotating bodies?
Correct Answer: Angular momentum
Step 1: Understand what a closed system is. A closed system is one where no external forces are acting on the objects inside it.
Step 2: Learn about angular momentum. Angular momentum is a measure of how much motion an object has while rotating.
Step 3: Know that in a closed system, the total angular momentum before any interactions (like collisions) will be the same as after those interactions.
Step 4: Recognize that linear momentum (straight-line motion) can change if objects collide or interact, so it is not always conserved.
Step 5: Understand that kinetic energy (energy of motion) can also change during interactions, so it is not always conserved either.
Step 6: Conclude that in a closed system of rotating bodies, only angular momentum is conserved.
