# Forces

## Grip

Grip is anything you can take and keep a firm hold of.

## Push

Exerted force on someone or something

## Pull

Exerted force on someone of something

## Gravity (weight)

Is the force with which gravity attracts an object towards the earth. Therefore, we consider weight as the gravitational force.

## Electrical Forces

Two positive charges will repel, as will two negative charges. A positive and a negative charge will attract. Observed in static electricity; lightning: used in copy machines. Friction is caused by electric forces.

## Friction

The force between two surfaces that works against motion abbreviation.

## Air Resistance

The force between air and a surface that works against motion.

## Buoyant Forces Cout.

For an object to float the upward bouyant force = the downward gravitational force.

## Air or water pressure

The outward force caused by contained water or air.

## Normal Force

The force perpendicular to an object's surface that results in support.

## Tension or Elastic Force

A force caused by a string, spring or rope resulting in stretching or pulling.