# Question #c18da

Aug 25, 2017

The most common force of attraction is gravity.

#### Explanation:

The force that attracts us to the Earth is called gravity. You live with gravity so I do not need to give you examples of that force. Other possible forces of attraction are electromotive force and magnetic force.

Examples of electromotive force: rub a balloon on a woolen sweater and the balloon will cling to a wall. After running a comb through dry hair, bits of paper can be attracted to the comb. Examples of electromagnetic force: iron fillings will be attracted to a magnet, an electric motor runs because of magnetic attraction.

I hope this helps,
Steve

Aug 25, 2017

The force that attracts (the mass) of all objects together is gravity.

#### Explanation:

Gravity as described by Newton is the attraction of one mass to adjacent other masses. Newton's law of universal gravitation is defined here:
https://en.wikipedia.org/wiki/Newton%27s_law_of_universal_gravitation

There are also other forces that attract objects together, such as electrostatic and magnet forces, but the force of gravity affects all masses.