Gravitational forces are a type of force that pulls objects towards each other. The size of the force depends on the mass of the objects. The most common example of a gravitational force is the pull between the Earth and objects on it, like people, animals, and things. Gravitational forces are very weak, but they become stronger as the object's mass increases.
What are Gravitational Forces?
Gravity is a force of attraction between two objects that is due to their masses. It is the reason why all objects on Earth are pulled towards the ground. Gravitational fields are areas around objects with mass that are affected by the gravitational force of that object. Gravitational Acceleration is the rate at which an object's velocity changes in a gravitational field, which is measured in meters per second squared (m/s^2).
What do you think is the most exciting thing about gravitational forces?
- That it keeps us from floating away
- That it helps us understand the universe better
- That it can cause objects to orbit each other
- That it can cause objects to attract each other
Gravitational forces are stronger between two objects that have more mass, such as Earth and the Sun. Gravitational waves are ripples in the fabric of space-time created by massive objects accelerating. The strongest gravitational force in the universe is caused by the supermassive black hole at the center of our galaxy.
Did you know?
What evidence can we use to support the idea that the gravitational force exerted by Earth is directed down?
Can you think of any examples of how the gravitational force of Earth affects our daily lives?
What are some objects in our solar system that are affected by the gravitational force of the sun?
How would our lives be different if the gravitational force of Earth was directed in another direction?
What other forces of nature do you think affect the way objects move?