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Friction
The document discusses the advantages and disadvantages of friction. It notes that friction allows for walking without slipping, driving cars without skidding, and writing with pencils. However, it also notes friction causes wear and tear of shoes and tires over time. Friction produces heat, such as when lighting a match. While necessary for many functions, friction also reduces efficiency of machines and motion.
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Introduction to the topic of friction, its advantages and disadvantages.
Definition of friction as the force opposing motion, acting between two contact surfaces.
Friction helps prevent slipping while walking, enables car movement, allows writing with pencils, and helps grip objects.
Friction wears down shoes, tires, and brake pads; it also causes wear on hard surfaces like stone steps.
Friction slows down moving parts in machines and vehicles, impacting performance and efficiency.
Friction is described as a necessary evil, being both useful and harmful in different contexts.
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Friction
- 1. Made by :- ArpitLekurwale
- 2. 20/02/2014 2 Advantages andDisadvantages of Friction
- 3. What isfriction ? Advantages of Friction Disadvantages of friction 20/02/2014 3 Advantages and Disadvantages of Friction
- 4. Friction (frictional force)is a force that acts in a opposite direction to movement. The force which always opposes the motion of one object over another, object in contact with it , is called friction. 20/02/2014 4 Advantages and Disadvantages of Friction
- 5. 20/02/2014 5 Advantages andDisadvantages of Friction
- 6. It isbecause of the friction between the sole of the shoe and ground prevents us from slipping. While walking , we push the ground backwards and the force of friction acts in the opposite direction (i.e. in the forward direction) and prevents us from slipping. By making the balance. 20/02/2014 6 Advantages and Disadvantages of Friction
- 7. 20/02/2014 7 Advantages andDisadvantages of Friction
- 8. Walking onslippery ground is difficult because friction on slippery ground is less due to which we may slip. 20/02/2014 8 Advantages and Disadvantages of Friction
- 9. It isbecause of the friction between the tyres of car and the road which enables car to move forward without skidding. If there were no friction , car would stay where it was. 20/02/2014 9 Advantages and Disadvantages of Friction
- 10. 20/02/2014 10 Advantages andDisadvantages of Friction
- 11. It becomessometimes difficult to drive and control car on wet road. This is because of water present on road reduces friction. 20/02/2014 11 Advantages and Disadvantages of Friction
- 12. It isbecause of the friction between the tip of the pencil ( or pen) and paper. Carbon particles from the pencil lead rubs off from it, due to the friction, which appears as black marks on the paper. 20/02/2014 12 Advantages and Disadvantages of Friction
- 13. We canhold a glass tumbler in our hands because of friction between the tumbler and our hands. Similarly, we can pick up the books laying on the desk by our hands. 20/02/2014 13 Advantages and Disadvantages of Friction
- 14. Friction alsoproduces heat. We rub matchstick against the rough side of a matchbox, then friction between both of them produces heat and this heat burns chemicals present at the head of matchstick and it lights up. 20/02/2014 14 Advantages and Disadvantages of Friction
- 15. 20/02/2014 15 Advantages andDisadvantages of Friction
- 16. When wewalk on the road, tiny surfaces of the shoe keep on breaking off slowly due to which the soles of our shoes wear out slowly Due to which shoes get damaged and becomes unfit to wear. 20/02/2014 16 Advantages and Disadvantages of Friction
- 17. After Before20/02/2014 17 Advantagesand Disadvantages of Friction
- 18. Like theshoe tiny particles of tyres also breakdown due to friction when they run on road. The same thing also happens with the bicycles 20/02/2014 18 Advantages and Disadvantages of Friction
- 19. Before After20/02/2014 19 Advantagesand Disadvantages of Friction
- 20. Brake padis made of rubber When the brakes of the vehicles are applied a lot of friction is produced Friction wears out the brake pads gradually Before - After 20/02/2014 20 Advantages and Disadvantages of Friction
- 21. The frictionbetween the soles of the shoes and wear away hard stone steps slowly. Such type of staircase are usually seen at : Railway station Offices Old Buildings 20/02/2014 21 Advantages and Disadvantages of Friction
- 22. 20/02/2014 22 Advantages andDisadvantages of Friction
- 23. Friction reducesthe motion of moving parts of a machine . In fact all the moving things such as (cars , buses, airplanes, boats, ships ,etc.) are slowed down by friction. 20/02/2014 23 Advantages and Disadvantages of Friction
- 24. 20/02/2014 24 Advantages andDisadvantages of Friction
- 25. 20/02/2014 25 Advantages andDisadvantages of Friction
- 26. Friction isa necessary evil We hate it sometimes but we also need it . It is very useful and but harmful too. 20/02/2014 26 Advantages and Disadvantages of Friction
- 27. 20/02/2014 27 Advantages andDisadvantages of Friction