# Where do satellites get their centripetal force?

## Where do satellites get their centripetal force?

Gravity supplies the necessary centripetal force to hold a satellite in orbit about the earth. The circular orbit is a special case since orbits are generally ellipses, or hyperbolas in the case of objects which are merely deflected by the planet’s gravity but not captured.

What provides the centripetal force on a satellite in orbit around a planet?

Gravitational attraction provides the centripetal force needed to keep a planet in orbit around the Sun, and a satellite in orbit around a planet. For example, gravitational attraction between the Earth and the Moon keeps the Moon in orbit around the Earth.

### What force makes satellites revolve around the Earth?

gravity
The Short Answer: Even when satellites are thousands of miles away, Earth’s gravity still tugs on them. Gravity—combined with the satellite’s momentum from its launch into space—cause the satellite to go into orbit above Earth, instead of falling back down to the ground.

Is the centripetal force that causes a satellite to move in a circle?

Centripetal forces cause centripetal accelerations. In the special case of the Earth’s circular motion around the Sun – or any satellite’s circular motion around any celestial body – the centripetal force causing the motion is the result of the gravitational attraction between them.

#### How do satellites use centripetal force?

An orbiting satellite is close enough to be acted upon by Earth’s gravity. This force is constantly pulling the satellite in toward the center of the earth – it is a centripetal force and causes a centripetal acceleration. At this height, however, Earth’s gravity is only about 8.7 m/s2.

How do satellites move around the earth?

A satellite orbits Earth when its speed is balanced by the pull of Earth’s gravity. Without this balance, the satellite would fly in a straight line off into space or fall back to Earth. Polar-orbiting satellites travel in a north-south direction from pole to pole.

## What provides the centripetal force?

The frictional force supplies the centripetal force and is numerically equal to it. Centripetal force is perpendicular to velocity and causes uniform circular motion. The larger the Fc, the smaller the radius of curvature r and the sharper the curve.

Why do satellites revolve around the Earth?

### What furnishes the centripetal force required to keep a satellite circling the earth?

As the moon orbits the Earth, the force of gravity acting upon the moon provides the centripetal force required for circular motion.

Why do satellites move in an elliptical orbit?

An elliptical orbit, also called an eccentric orbit, is in the shape of an ellipse. When the satellite is in the part of its orbit closest to the Earth, it moves faster because the Earth’s gravitational pull is stronger. The satellite is moving the fastest at the low point of an elliptical orbit.

#### What is the centripetal acceleration of the satellite?

A satellite in a circular orbit experiences a centripetal acceleration of 8.62 m/s^2.

How does centripetal force due to gravity keep a satellite in orbit?

An orbiting satellite is close enough to be acted upon by Earth’s gravity. This force is constantly pulling the satellite in toward the center of the earth – it is a centripetal force and causes a centripetal acceleration. When the satellite is orbiting in this way, it is falling straight down towards Earth.