Lubrication is the most common means of reducing friction, for example the motor oil used in car engines. While friction is increased by give the surfaces a rough or textured feel such as in sand paper, hiking boot soles, and tire treads. Of course conversely friction can also be decreased by smoothing surfaces out, the reason swimmers shave their bodies or use wet suits to increase their speed.
Click here to cancel reply.
Signup for an account and start participating in our site today!
You can also login with your Facebook or Twitter account
Don't have an account? Click Here to Signup
© Copyright GreenAnswers.com LLC