Examples for

# Gravity

The theory of gravity describes how all things with mass are brought toward one another. Wolfram|Alpha incorporates this knowledge to compute the gravitational field of objects, the force of gravitation and the effects of gravity on motion.

### Gravity

Calculate the gravitational force, its effect on free falling objects and other mechanical effects of gravitation.

#### Do a gravitation calculation:

#### Find equations associated with the two-body problem:

#### Compute time to fall:

#### Find equations associated with free fall:

#### Compute the reduced mass of a system of two bodies:

#### Compute work done against gravity:

### Massive Objects

Explore the gravitational equations and effects of massive objects.