Inertial Mass

Mr. Anderson explains inertial mass in AP Physics Essentials video 9. He discusses how astronauts measure their mass in space using a spring-based device, contrasting inertial mass with gravitational mass. The video includes a physics lab experiment using a modified Atwood machine to demonstrate the relationship between net force, inertial mass, and acceleration. Newton's second law is applied to understand these concepts, emphasizing the indirect relationship between mass and acceleration when force is constant.

How do astronauts measure their mass in space?

• By using a digital scale

• By calculating their weight

• By using a body mass measuring device with a spring

• By using a regular scale

In the modified Atwood machine experiment, what remains constant?

• The speed of the cart

• The net force

• The mass of the cart

• The acceleration

What happens to acceleration when the mass of the cart is increased while keeping the net force constant?

• Acceleration increases

• Acceleration remains the same

• Acceleration decreases

• Acceleration becomes zero

Which law explains the relationship between force, mass, and acceleration?

• Newton's Second Law

• Law of Universal Gravitation

• Newton's First Law

• Newton's Third Law

What is inertial mass based on?

• The gravitational pull of the Earth

• The inertia of the object

• The density of the object

• The volume of the object