Make a project on various methods used to reduce friction in the moving machinery or
auto parts.
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Answers
Answer:
Explanation:
Without friction, we would not be able to hold anything and everything would slide everywhere. Too much friction, however, slows movement . We use friction everyday, like our shoes have grip that help us to walk easily, if the ground is slippery and we have very smooth soles, its difficult to walk because we have less of a grip on the ground.
A car has different types of friction working within it and on it. A car needs certain amount of friction to move, but its tyres still need grip so that the car will not stray off the road. The brakes also use friction to control the deceleration of the car. Eventually, the parts that are subject to friction will wear down and need to be replaced.
Reducing friction
It is beneficial to reduce the friction between surfaces to make movement easier or reduce the wear and tear on a surface. There are a number of ways to reduce friction:
Make the surfaces smoother. Rough surfaces produce more friction and smooth surfaces reduce friction. A lubricant is a slippery substance designed to reduce the friction between surfaces.
Make the object more streamlined. A streamline shape is one that allows air or water to flow around it easily, offering the least resistance. Compare a boxy old car with a new car that has a rounded shape, allowing it to move with less effort.
Spheres are the best shape for reducing friction because very little of a spherical object is in contact with the other surface. Several types of wheels, such as skateboard wheels, contain small spheres called ball bearings to reduce the friction between the moving parts. You can witness the effect of ball bearings by comparing the friction between sliding a book on a table and then doing the same.