Angular Momentum in Biomechanics: Interactive Learning Quizzes

Question 1

Which of the following is NOT a factor that determines angular momentum?

Accepted Answer

Gravity

Answer

Radius of rotation

Answer

Mass

Answer

Velocity

Question 2

The SI unit for angular momentum is:

Accepted Answer

kg m^2/s

Answer

rad/s

Answer

J

Answer

N m

Question 3

Which of the following describes a property of angular momentum?

Accepted Answer

It is a vector quantity.

Answer

It can be negative.

Answer

It is a scalar quantity.

Answer

It is independent of the frame of reference.

Question 4

Which statement about theorems related to angular momentum is false?

Accepted Answer

Einstein's Theory of Relativity is a theorem related to angular momentum.

Answer

The Conservation of Angular Momentum is a theorem.

Answer

The Perpendicular Axis Theorem is a theorem.

Answer

The Parallel Axis Theorem is a theorem.

Question 5

During a figure skater's triple axel jump, their angular momentum is:

Accepted Answer

Approximately conserved throughout the jump.

Answer

Decreasing throughout the jump.

Answer

Increasing throughout the jump.

Answer

Zero at the peak of the jump.

Question 6

What is the formula for calculating angular momentum (L)?

Accepted Answer

L = I * ω

Answer

L = F * r

Answer

L = KE

Question 7

What is the SI unit of angular momentum?

Accepted Answer

kilogram meters squared per second (kg⋅m²/s)

Answer

watt (W)

Answer

newton meter (N⋅m)

Question 8

Which equation represents the angular momentum of a point mass (m) moving in a circular path with radius (r) and velocity (v)?

Accepted Answer

L = m * v * r

Answer

L = F * d

Answer

L = KE

Question 9

For a rigid body rotating about a fixed axis, what is the relationship between angular momentum (L), moment of inertia (I), and angular velocity (ω)?

Accepted Answer

L = I * ω

Answer

L = m * v * r

Answer

L = F * d

Question 10

Provide an example of angular momentum in action from everyday life.

Accepted Answer

A figure skater spinning on one foot

Answer

A ball rolling down a hill

Answer

A car driving on a straight road

Question 11

What happens to the angular momentum of a spinning object when an external torque is applied to it?

Accepted Answer

The angular momentum changes.

Answer

The radius of rotation changes.

Answer

The velocity changes.

Question 12

In the field of biomechanics, what is a significant application of angular momentum?

Accepted Answer

It aids in calculating joint moments and muscle forces.

Answer

It assists in determining bone density.

Answer

It helps calculate body mass index.

Question 13

What is the definition of angular momentum?

Accepted Answer

Mass, velocity and radius of rotation of an object

Answer

Mass and velocity of an object

Answer

Radius of rotation and velocity of an object

Question 14

In which type of system is angular momentum conserved?

Accepted Answer

Closed systems

Answer

Isolated systems

Answer

Open systems

Answer

Gravitational systems

Question 15

What units are used to measure angular momentum?

Accepted Answer

Kilogram meters squared per second (kg m²/s)

Answer

Radians per second (rad/s)

Answer

Joules (J)

Answer

Newtons (N)

Question 16

How will slippery ice affect the angular momentum of a dancer performing a pirouette?

Accepted Answer

It will decrease

Answer

It will become zero

Answer

It will increase

Answer

It will remain constant

Question 17

Which of the following is the correct formula for angular momentum?

Accepted Answer

L = Iω

Answer

L = E/t

Answer

L = mvr

Answer

L = Fd

Question 18

In a closed system, which quantity is conserved?

Accepted Answer

Angular momentum

Answer

Energy

Answer

Linear momentum

Question 19

Which of the following factors influence the angular momentum of an object?

Accepted Answer

Mass, velocity, and radius of rotation

Answer

Pressure

Answer

Volume

Answer

Temperature

Question 20

Which of the following represents the unit of angular momentum?

Accepted Answer

kg·m²/s

Answer

J

Answer

N·m

Answer

kg·m/s

Question 21

An example of angular momentum in日常生活 is:

Accepted Answer

A spinning top

Answer

Walking

Answer

Jumping

Answer

Running

Question 22

An ice skater is spinning at a constant speed. They extend their arms. What happens to their angular momentum?

Accepted Answer

It decreases.

Answer

It remains the same.

Answer

It increases.

Answer

It becomes zero.

Question 23

A spinning top is slowing down over time. What is happening to its angular momentum?

Accepted Answer

It is decreasing gradually.

Answer

It becomes zero.

Answer

It remains the same.

Answer

It is increasing gradually.

Question 24

Which factor does NOT affect the angular momentum of a system?

Accepted Answer

Air resistance

Answer

Mass

Answer

Radius

Answer

Velocity

Question 25

Define angular momentum.

Accepted Answer

The product of mass, velocity, and radius of rotation.

Answer

The product of momentum and moment of inertia.

Answer

The product of force, time, and distance.

Answer

The product of kinetic energy and rotational speed.

Question 26

In a closed system, what happens to angular momentum?

Accepted Answer

It remains constant, irrespective of internal changes.

Answer

It decreases steadily.

Answer

It changes direction.

Answer

It increases gradually.

Question 27

What is the correct unit for measuring angular momentum?

Accepted Answer

Kilogram meter squared per second (kg m^2/s)

Answer

Newton meter (N m)

Answer

Watt (W)

Answer

Joule (J)

Question 28

Describe the relationship between torque and angular momentum.

Accepted Answer

Torque is the rate of change of angular momentum.

Answer

They are independent of each other.

Answer

They are equal to each other.

Answer

Angular momentum is the rate of change of torque.

Question 29

A gymnast performing a somersault increases their moment of inertia by tucking their limbs. What is the effect on their angular velocity?

Accepted Answer

Decreases

Answer

Remains constant

Answer

Becomes zero

Answer

Increases

Question 30

Which sport primarily involves the application of angular momentum?

Accepted Answer

Figure skating

Answer

Cycling

Answer

Swimming

Answer

Running

Question 31

True or False: Angular momentum is a vector quantity.

Accepted Answer

True

Answer

It depends on the context

Answer

False

Answer

Not sure