Question
What does friction cause to the screws, ball bearings
and soles of the shoes?Solution
Friction is a force that opposes the motion and comes into play when two bodies in contact either try to move or start moving over each other. When two bodies rub against each other, Frictional force comes into play, and work is done to overcome the friction. As a result, heat is produced, and when the objects are repeatedly subjected to this heat in the long run and get damaged. The nano-scale irregularities present on the surfaces of contact are considered as the origin friction. Lubrication and Smoothening of surfaces are done to reduce friction.
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