Advantages of Friction

Advantages of friction (or desirable effects of friction)

                        I.            Locomotion: when we walk, friction between our shoes and the ground prevents our shoes from slipping backward.

                     II.            Enhances fastening: friction between the bolt and the nut enhances their fastening ability. The friction between nails and wood also help the nail to hold woods together in firm position.

                  III.            Blending: friction between the grinding stones helps in grinding pepper, tomatoes, this is also true of the friction between the two rough discs of the grinding machine.

                  IV.            Stops motion: friction between the car tyre and the road helps to stop the motion of a moving car when the brake is applied.

                     V.            Production of electric charge: when certain materials are robbed against each other, static electric charges is produced. This principle is applied in the Van de Graff generator.

                  VI.             Ladder: when a ladder to be used to climb over a wall rest on the wall, friction between the foot of the ladder and floor prevent the foot of the ladder from slipping.

               VII.            Making of fire: matches sticks are ignited when they are robbed against the side of the matches’ box. Fire can also be made by striking two stones together.

 


These are a few blog posts I enjoyed reading this week.

Check them out!

https://www.jssor.com/classhall/unitary-system-of-government.slider
https://gumroad.com/classhall/

https://www.mojomarketplace.com/user/classhall-Ihip89z2Sr

http://uxmag.com/readers/classhall

https://social.microsoft.com/Profile/classhall
https://readthedocs.org/projects/smart-learning-/
https://classhall.micro.blog/2019/06/16/division-of-labour.html