Gravity is very dependent on the mass of objects. The equation for gravity is
G m₁m₂/r².
G is a constant that we don’t need to worry about for now. m₁ and m₂ are the masses of object 1 and 2, and r is the distance between the objects.

So the force of gravity is directly proportional to the mass of each object- that is why the gravity of earth is so strong- the earth is massive! Technically everything with mass exerts a gravitational force. Say you are standing next to your friend- there is a very small gravitational force between the two of you, but since your friend’s mass is much less than that of earth, the gravitational force of earth is the only one you notice.

Hi Tiago. The larger the mass the greater the gravity of the object. For example, the gravity you would feel on the moon is much less than on Earth. Imagine bouncing on the moon! This is because the moon has much less mass than the earth. This means the moon has less gravity.

Gravity increases as mass increases. In fact, this is an example of a "linear relationship," which means that if you have a mass that is twice as big, the force of gravity will be twice as strong. Not all relationships are linear: for example, the force of gravity also depends on the distance between objects, but not linearly. If you double the distance between objects, the strength of gravity decreases by a factor of 4. In physics, it is very important to notice what relationships are linear.

Hi Tiago, thank you for your question! Gravity is one of the four fundamental forces in physics and so important for the way our universe works.

Gravity is what draws anything with mass towards each other. On Earth, gravity is what gives us all weight and pulls us to the ground. The force of gravity is equal to a gravitational constant (just a constant number) multiplied by the mass of the first object, times the mass of the second object. Then all of this is divided by the distance between the two objects, squared. With this equation in mind, the larger the two masses (or objects) are, the stronger the gravitational force! The smaller the distance between the two objects is also increases the gravitational force!

The force of gravity, that one object exerts on another, is equal to the mass of the first object, times the mass of the second, times a constant that determines how strong a force gravity is, divided by the distance between them, and then divided again by the distance between them.

Thus, more mass, more gravity.

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