Friction as a necessary evil

1. Friction As a Necessary Evil

2. Friction An opposing force called into plain, when two surfaces in contact with each other tend to slide relative to one another is called friction .

3. Example Sander on a Piece of Wood = High Degree of Friction

4. Types of Friction Static Friction Limiting Friction Sliding Friction

5. Friction As A Necessity Friction as a necessity i t produces heat and slows down moving bodies . If there were no friction , the bodies will either slip or not move.

6. Benefits Of Friction We are able to drive automobiles Writing on paper Spiked shoes of cricket players Striking a matchstick

7. Disadvantages Of Friction Forest fires are caused Noise pollution is caused

8. Friction AS An Evil Friction as an evil Friction brings about wear and tear in moving bodies . It produces heat and slows down moving bodies . A lot of energy is wasted in overcoming friction.

9. Is Friction good or bad?

10. Friction can be a good When we walk we push backwards against the ground, the  opposing   force  pushes us forwards . Without friction   , our   feet would   slip   and   walking   would be impossible .

11. Friction can be bad  Soil erosion caused by wind (friction of a fluid ). Holes in your shoes, jeans. (friction of a solid) high friction. Lack of friction is dangerous too, you may fall if the floor is very slippy .