Newton's Law of Universal Gravitation

Front

Every object with mass is gravitationally attracted to each other object with mass in the entire universe.

Back

True

Front

What factors affect gravitational force?

Back

mass, distance

Front

What is the relationship between mass of object and distance between objects?

Back

When mass increases, gravitational force increases

Front

Why is gravity on the moon less than on Earth?

Back

Moon's mass is less.

Front

If one of two objects decreases its mass, it _________ the gravitational pull between the two objects.

Back

decreases

Front

If two objects decrease their distance, it _________ the gravitational pull between the two objects.

Back

increases

Front

The mass of the Sun is 2.0 × 10³⁰ kg and the mass of the Earth is, m_e = 5.97 × 10²⁴kg. The distance from the Earth is 1.50 × 10¹¹km. What is the gravitational force between the Sun and the Earth? (G = 6.67 × 10^-11 N m^-2 kg^-2)

Back

3.54 x 10²² N

Front

Calculate the Earth’s gravitational force on a 2.5 x 10⁴ kg rocket when its distance from the Earth is 1.0 x 10⁹ m. (G = 6.67 × 10^-11 N m^-2 kg^-2, m_e = 5.97 × 10²⁴kg)

Back

9.95 N

Front

A sphere with mass 100 kg is brought to the top of a mountain of height 6000 m. What is its weight there?

Back

975 N

Front

How does gravity work according to Einstein's theory?

Back

An object's mass bends the fabric of space, drawing nearby objects toward the bend.