Understanding Angular Momentum in Biomechanics

What distinguishes angular momentum from other biomechanics branches?

• Analysis of aquatic motion

• Emphasis on linear movements

• Focus on rotational movements

• Study of static positions

Why is angular momentum considered a constant?

• It changes with the object's speed

• It varies with the object's mass

• It remains unchanged regardless of motion

• It depends on external forces

How is angular momentum calculated?

• Angular velocity / moment of inertia

• Angular velocity - moment of inertia

• Angular velocity + moment of inertia

• Angular velocity * moment of inertia

What does moment of inertia represent in the context of angular momentum?

• The direction of the object's rotation

• The force needed to rotate an object

• The object's resistance to changes in its rotation

• The speed of the object's rotation

How can an athlete increase their speed of rotation?

• Increase angular momentum

• Increase moment of inertia

• Decrease moment of inertia

• Decrease angular velocity

What effect does tucking the body in have on an athlete's rotation?

• Has no effect on rotation

• Decreases moment of inertia

• Increases moment of inertia

• Decreases angular velocity

What is the relationship between moment of inertia and angular velocity when angular momentum is constant?

• Not related

• Equal to each other

• Inversely proportional

• Directly proportional

In diving, how does extending the body affect angular velocity?

• Increases it

• Does not affect it

• Decreases it

• Makes it unpredictable

What happens to angular velocity if moment of inertia increases?

• It increases

• It decreases

• It remains constant

• It becomes zero

Why do divers tuck their knees in during a somersault?

• To increase moment of inertia

• To decrease moment of inertia

• To look aesthetically pleasing

• To comply with competition rules