Apparent Weight in Elevators

The video tutorial explains the concept of elevator problems in physics, focusing on how forces act on a person standing on a bathroom scale inside an elevator. It covers scenarios where the elevator is stationary, accelerating upward, and accelerating downward, and how these affect apparent weight and mass. The tutorial includes calculations for apparent weight and mass, and discusses practical implications in real-world settings.

What does a bathroom scale measure when you are standing still in an elevator?

• The gravitational force

• The normal force

• Your actual weight

• The elevator's speed

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

• It becomes zero

• It increases

• It remains the same

• It decreases

If an elevator accelerates upward at 2 m/s², what is the apparent weight of a 50 kg person?

• 690.5 N

• 390.5 N

• 590.5 N

• 490.5 N

How does the apparent mass change when the elevator accelerates upward?

• It decreases

• It remains the same

• It increases

• It becomes zero

What is the apparent weight of a 50 kg person when the elevator accelerates downward at 3 m/s²?

• 240.5 N

• 540.5 N

• 440.5 N

• 340.5 N

When the elevator accelerates downward, what happens to the apparent mass?

• It increases

• It remains the same

• It becomes zero

• It decreases

Why do you need a long elevator shaft to experience significant changes in apparent weight?

• To reach higher speeds

• To increase gravitational force

• To have more time to accelerate

• To reduce friction

What would you observe on a needle-based bathroom scale in a short elevator ride?

• The needle would break

• The needle would not move

• The needle would move significantly

• The needle would move slightly

In a building with only three floors, how does the elevator's acceleration compare to a taller building?

• It is much greater

• It is slightly greater

• It is much smaller

• It is the same

What is a realistic acceleration value for an elevator in a short building?

• 0.4 m/s²

• 2 m/s²

• 1 m/s²

• 3 m/s²