Elevator Physics and Apparent Weight

This video tutorial focuses on solving elevator problems by analyzing the forces acting on a person standing on a scale inside an elevator. It explains how the normal force, which the scale reads, varies depending on the elevator's motion. The tutorial covers scenarios of the elevator at rest, moving at constant speed, and accelerating, illustrating how these affect the apparent weight. It also discusses the concept of free fall and how it impacts the reading on the scale.

What does the scale read when the elevator is at rest?

• The weight force

• The normal force

• Zero

• Double the weight force

When the elevator moves upward at a constant speed, what happens to the scale reading?

• It becomes zero

• It decreases

• It increases

• It remains the same

If the elevator moves downward at a constant speed, what will the scale show?

• The same weight

• A higher weight

• No weight

• A lower weight

What is the acceleration of the elevator when it is moving at constant speed?

• 9.8 m/s²

• 0 m/s²

• 5 m/s²

• 3 m/s²

What happens to the apparent weight when the elevator accelerates upward?

• It decreases

• It remains the same

• It increases

• It becomes zero

During downward acceleration, how does the apparent weight change?

• It increases

• It decreases

• It becomes zero

• It remains constant

When do you feel the change in weight in an elevator?

• When the elevator is at rest

• When the elevator moves at constant speed

• When the elevator accelerates

• When the elevator is empty

What is the normal force when the elevator accelerates downward at 4 m/s²?

• 1024 N

• Zero

• 784 N

• 464 N

What is the apparent weight when the elevator is in free fall?

• Zero

• Less than the actual weight

• Greater than the actual weight

• Equal to the actual weight

In free fall, why does the scale read zero?

• Because the scale is broken

• Because the person is too light

• Because the person is not touching the scale

• Because the elevator is moving too fast