# The weight

The reason of object’s falling downward the Earth is a type of force called the weight ( the gravitational force ) , And you can feel this force when you carry an object or try lifting it , The weight is the force with which a body is attached to the Earth or it is the gravitational force by which a body is attached to the Earth .

The weight on the Earth and the moon .

The effect of the weight is always directed towards the center of the Earth , On Earth , all the objects have the weight , but in the space all the objects are in a state of the weightlessness , The weight of any object can be measured by the spring scale by determining the extension of its spring .

Everything seems weightless inside the spacecraft which revolves around the Earth , Newton is the measuring unit of the weight and it is almost equal to the weight of an object on the Earth’s surface whose mass is 100 grams .

## The factors affecting the weight

The weight of any object is affected by three factors which are the object’s mass , the planet ( the place ) where the object exists ,  the distance between the object and the center of the planet .

The weight of any object on the Earth’s surface increases by increasing the object’s mass , The weight of an object differs according to the planet ( or the moon ) where the object exists .

The weight

As the mass of the planet ( place ) increases . its gravitational force for an object increases , So the weight of the object increases .

The weight of the object on the moon’s surface equals one sixths of its weight on the Earth’s surface , because Earth has greater mass and gravitational force than the moon .

The weight of any body decreases when the distance between the body and the center of the planet increases because the gravitational force decreases .