What is Friction ?

Friction is a force that opposes movement between two surfaces that are in touch. It has types like static, kinetic, rolling, and fluid friction. Factors like surface nature, normal force, and lubrication affect friction. The coefficient of friction quantifies its strength. Friction has both beneficial and detrimental effects, influencing various fields including engineering and transportation.

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Table of Content

1. Introduction

2. Types of friction

3. Graph of friction

4. Friction is a cause of motion

5. Advantages and disadvantages of friction

6. Methods of changing friction

7. Angle of friction

8. Resultant force exerted by surface on block

9.  Angle of repose

10. Calculation of necessary force in different conditions

11. Acceleration of a block against friction

12. Work done against friction

13. Motion of two bodies one resting on the other

14. Motion of an insect in the rough bowl

15. Minimum mass hung from the string to just start the motion

16. Maximum length of a hung chain

17. Coefficient of friction between body and wedge

18. Stopping of block due to friction

19. Stopping of two blocks due to friction

20. Velocity at the bottom of a rough wedge

21. Sticking a block with an accelerated cart

22. Sticking a person from the wall of the rotor