Gravity and Weight Concepts

The video tutorial explains the concept of gravity, emphasizing its universal nature and the gravitational attraction between any two masses. It introduces Newton's Law of Universal Gravitation, highlighting the relationships between mass, distance, and gravitational force. The tutorial compares the gravitational forces exerted by the Sun and Moon on Earth, explaining why we are not pulled into the Sun. It also discusses the effects of the Moon's gravity on Earth's tides. The video further explores gravity beyond planets, using the Cavendish experiment to demonstrate gravitational attraction between smaller objects. Finally, it clarifies the difference between weight and mass, explaining how weight varies with gravitational force while mass remains constant.

Why are people on all sides of the Earth attracted towards its center?

• Due to the Earth's atmosphere

• Because of gravity

• Due to the Earth's rotation

• Because of the Earth's magnetic field

What does Newton's Law of Universal Gravitation help us calculate?

• The speed of light

• The mass of the Earth

• The attractive force of gravity between two masses

• The distance between two planets

According to Newton's Law, what happens to the gravitational force if the distance between two objects increases?

• It becomes weaker

• It fluctuates

• It becomes stronger

• It remains the same

Why aren't we pulled into the Sun despite its massive size?

• Because the Sun is too far away

• Because the Sun's gravity is weaker

• Because of the Earth's atmosphere

• Because the Earth's gravity is stronger

What causes ocean tides on Earth?

• The Earth's rotation

• The Earth's magnetic field

• The Sun's gravity

• The Moon's gravity

What did Henry Cavendish's experiment demonstrate?

• The mass of the Sun

• The Earth's rotation

• The force of gravity between two masses

• The speed of light

How does climbing a mountain affect your weight?

• It increases your weight

• It decreases your weight

• It makes you weightless

• It has no effect on your weight

What is the difference between weight and mass?

• Weight is the amount of matter, mass is the force of gravity

• Weight is the force of gravity, mass is the amount of matter

• Mass changes with location, weight does not

• Weight changes with location, mass does not

If you weigh 150 lb on Earth, how much would you weigh on the Moon?

• 150 lb

• 75 lb

• 25 lb

• 50 lb

Why do astronauts bounce around on the Moon?

• Because the Moon has no gravity

• Because the Moon's gravity is weaker

• Because the Moon's surface is bouncy

• Because they wear special suits