# How to Explain Gravity & Friction?

Gravity and friction are two forces that work together to allow life as we know it on earth. They are balanced forces. There is no movement without first overcoming friction, which is why a heavier... Read More »
http://www.ehow.com/how_8515652_explain-gravity-friction.html

Top Q&A For: How to Explain Gravity & Friction

## Specific Gravity Vs. API Gravity of Hydraulic Oil?

Specific gravity and API gravity are both measurements of density. They both can be used to measure the gravity of a fluid, such as hydraulic oil, in the same way that miles or kilometers can both ... Read More »

## How to Understand Friction?

Friction is basically the force that two surfaces exert on each other when they rub against each other. In this guide, you'll learn the different types of friction and the cause. There are three ty... Read More »
http://www.wikihow.com/Understand-Friction

## Science Activities for Friction?

Friction is a vital component in the proper functioning of the universe. You can teach students about friction by demonstrating some of the many ways that friction plays a role in their everyday li... Read More »
http://www.ehow.com/list_6566667_science-activities-friction.html

## How to Calculate Friction Loss?

Friction robs devices of their performance capacity, whether it's a sled headed down a snowy hill, car tires rolling down the freeway, or water shooting out of a fire hose. While each device has it... Read More »
http://www.ehow.com/how_8512218_calculate-friction-loss.html

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