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