Understanding Angular Momentum

What is the definition of angular momentum?

• Angular momentum is the energy stored in an object at rest.

• Angular momentum is the product of an object's moment of inertia and its angular velocity.

• Angular momentum is the force applied to an object in motion.

• Angular momentum is the speed of an object in a straight line.

How is angular momentum calculated for a rotating object?

• L = m * v

• L = F * d

• L = p * t

• L = I * ω

What is the principle of conservation of angular momentum?

• Angular momentum in a closed system remains constant if no external torque acts on it.

• Angular momentum is only conserved in open systems.

• Angular momentum increases with external torque.

• Angular momentum can be created from nothing.

In what type of systems is angular momentum conserved?

• Systems with constant external forces.

• Isolated systems with no external torques.

• Closed systems with friction present.

• Open systems with varying mass.

Explain how angular momentum is conserved in an isolated system.

• Angular momentum increases in the presence of external forces.

• Angular momentum is only conserved in systems with friction.

• Angular momentum can be created or destroyed in an isolated system.

• Angular momentum is conserved in an isolated system because there are no external torques acting on it.

What happens to angular momentum during a collision?

• Angular momentum is always lost in a collision.

• Angular momentum can be created during a collision.

• Angular momentum increases during a collision.

• Angular momentum is conserved during a collision in a closed system.

How does angular momentum change in an inelastic collision?

• Angular momentum is always lost in an inelastic collision.

• Angular momentum is only conserved if the objects stick together after the collision.

• Angular momentum is conserved in an inelastic collision if no external torques are present.

• Angular momentum changes direction in an inelastic collision regardless of external forces.

What is the relationship between torque and angular momentum?

• Torque is the rate of change of angular momentum.

• Torque is the same as angular momentum.

• Torque decreases angular momentum.

• Angular momentum is independent of torque.

Provide an example of angular momentum conservation in sports.

• A basketball player shooting a free throw.

• A football player kicking a ball.

• A swimmer diving into the water.

• A gymnast performing a somersault.

How does a figure skater demonstrate conservation of angular momentum?

• By extending their arms, a skater slows down their spin.

• By leaning forward, a skater maintains their spin rate.

• By jumping higher, a skater increases their rotational speed.

• By pulling in their arms, a skater spins faster, illustrating conservation of angular momentum.