Weight and Apparent Weight Concepts

The video tutorial explains the concepts of true weight and apparent weight, highlighting how astronauts experience weightlessness while orbiting Earth. It compares this sensation to everyday experiences like roller coasters. The tutorial delves into the physics of weight variations in different states of motion, such as in an elevator, and explains how apparent weight changes with acceleration. It also covers the concept of weightlessness during freefall and in space, emphasizing that while the force of gravity remains, the apparent weight becomes zero.

What sensation do astronauts experience while orbiting Earth that is similar to a ride on a roller coaster?

• True weight

• Apparent weight

• Increased gravity

• Weightlessness

What is the true weight of a body defined as?

• The force exerted by the body on Earth

• The force exerted by Earth on the body

• The normal contact force

• The gravitational pull of the moon

How is the apparent weight of a body determined when it is placed on a weighing machine?

• By the mass of the body

• By the normal contact force

• By the gravitational force

• By the speed of the weighing machine

What happens to the apparent weight of a person in an elevator moving downwards with constant acceleration?

• It becomes zero

• It is more than the true weight

• It is less than the true weight

• It remains the same as the true weight

When an elevator moves upwards with acceleration, how does the apparent weight compare to the true weight?

• It is less than the true weight

• It is more than the true weight

• It becomes zero

• It remains unchanged

What is the apparent weight of a person in a freely falling elevator?

• Equal to the true weight

• Less than the true weight

• Zero

• More than the true weight

During free fall, why does a person appear weightless?

• Because gravity is zero

• Because the normal force is maximum

• Because the true weight is zero

• Because the apparent weight is zero

What causes astronauts to experience weightlessness while orbiting Earth?

• Zero mass in space

• Continuous free fall towards Earth

• Increased distance from Earth

• Lack of gravity in space

In space, why do astronauts not exert force on the sides or floor of the spaceship?

• Because they are in a state of rest

• Because they are weightless

• Because they are in continuous free fall

• Because the spaceship is stationary

What is the state of the spaceship and astronaut orbiting Earth?

• Stationary

• Moving downwards

• In continuous free fall

• Moving upwards