Ways of Increasing Friction and Reducing Friction

Ways to increase friction and reduce friction

Method of reducing friction

Frictional wear depends on two factors: the roughness of the two surfaces in contact and the length of time the two surfaces rub together. The wear and tear of an object is undesirable because it shortens its life. This is especially true for moving parts in cars and machines. Therefore, efforts have been made to reduce friction between moving parts. Friction between moving parts is often reduced by introducing a substance between the moving surfaces. This process is called lubrication. The substance that is introduced is called a lubricant. Common lubricants are oils and greases. Read more: how to increase frictionBearings Read more: How to Log Out Skinhub and Get It Right About Its Features Small bearings are also used to reduce friction. Ball bearings convert sliding friction into rolling friction. This is a very useful thing to do because rolling friction is much smaller than sliding friction. Ball bearings are used in most mechanical structures with moving parts. Small metal balls of stainless steel, brass, ceramic, etc., are placed between moving surfaces (the surface can be flat or cylindrical) to reduce friction. In addition to friction between solid parts, there can also be friction caused by liquids (e.g. air and water). The force of friction due to air and water (and other liquids) is called fluid friction. When cars and planes travel at very high speeds, their motion is counteracted by the frictional force created by the air molecules around them. The friction of the air creates what is called drag, which opposes the motion of the vehicle. The same applies to ships and boats. To reduce drag, cars, ships, and airplanes are given a special shape, known as a streamlined shape. Cars with streamlined bodies are subject to minimal resistance when moving through the air. Even sea creatures like fish and sharks have streamlined bodies, which makes it easy for them to move at great speeds through the water.

Use lubricant: In machinery, friction can be minimized by applying lubricant between the contacting surfaces to fill in the small voids or depressions in the surface and make them smooth thereby reducing friction.
Polish: The unevenness of the surfaces can be reduced by polishing, thus reducing friction.
Using ball bearings: In rotating machines, shafts are mounted on ball bearings. That way, rolling friction occurs less than sliding friction, thereby reducing friction.
By proper arrangement: Friction with the air is minimized by a streamlined car or aircraft body design. Similarly, if the hull of a boat is properly arranged, the frictional force of the water can be reduced.

Method of increasing friction

Read more: how to overcome play and use There are two methods of increasing friction: one is to make surfaces rough and the other is to increase the mass of a moving object. For example, tires have grooves (these are ‘designs’ that you can see on the tire’s surface), which increase the friction between the tire and the road surface. Similarly, the sole of the shoe has grooves, to increase friction. Gym goers often cover their hands with raw material for a better grip by increasing friction.Work Purpose: To show that greater friction increases wear. Materials needed: A new eraser, a piece of paper from a notebook, a piece of cardboard and sandpaper. Method: Use the eraser to scrub the various surfaces mentioned above. Each time, record the amount of wear on the eraser. Observe: You will find that the rougher the surface, the greater the wear and tear. Inference: Greater friction increases wear. Read more: How to make mushroom caps

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