Friction

This is what most people think atoms in a solid object look like.

Actually even as a solid object atoms have a lot of spaceThink of a two dollar coin in the middle of a football stadium.Each atom attracts each other atom and thus they have a rigid structure. However, because of the space they have something special happens when they are compressed.The positive nuclei start to repel each other as the come closer together.The closer they get the more they repel each other.

THIS IS WHYA solid object can push back with an equal force

Normal Reaction Force

Consider these:And yes I know you love it but yet another use for

Trigonometry

Friction

https://www.youtube.com/watch?v=ZA_D4O6l1lo

Co-Efficient of

Friction

On an Inclined Plane

• We are going to watch this together. If you have got it after watching have a go at answering 10 – 12 on page 78.

• If not then either read pages 74 – 78 OR come to the front for an extra explanation

https://www.youtube.com/watch?v=TC23wD34C7k