Normal reaction force and friction

1. Friction

2. This is what most
people think atoms in
a solid object look like.
Actually even as a solid object atoms have a lot of
space
Think 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.

3. THIS IS WHY
A solid object can push back with an equal force
Normal Reaction Force

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

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

8. Co-
Efficient of
Friction

13. 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