write various techniques adopted by human beings to reduce energy losses due to friction

.what r air cushionson machines
 

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VARIOUS TECHNIQUES BEINDG ADOPTED BY HUMAN BEINGS TO OVERCOME FRICTION- 1.USING OF LUBRICANTS SUCH AS POWDER,KEROSENE OIL ETC. 1.a WE USE POWDER ON CARROM BOARDS TO DECREASE THE IRREGULARITIES ON THE SURFACE OF THE CARROM BOARD TO REDUCE THE FRICTION BETWEEN THE STRIKER AND THE BOARDWHICH HELPS TO MOVE THE STRIKER EASILY AND SMOOTHLY. 1.b WE USE KEROSENE OIL ON DOORS AS IT HELPS THE DOOR TO MOVE EASILY AND SMOOTHLY 2. USING BALL BEARINGS- THIS PHENOMENA IS USED ON MACHINES IN WHICH TINY STEEL BALLS ROLL OVER EACH OTHER WHICH DECREASES FRICTION. 3.USING OF AIR CUSHIONSON MACHINES 4. USE OF STREAMLINING-IT HELPS TO CUT DOWN THE AIR CUT DOWN THE FLUID CURRENTS WHICH HELPS THEM TO OVERCOME THE FLUIDS FRICTION.THE STREAMLINED BODY IS USED IN CARS, BUSES, SUBMARINES AND BOATS.BIRDS AND FISHES ALSO HAVE STREAMLINED BODY. HOPE THIS HELP YOU!!!

Rubbing both hands to create heat in driving a car walking writing brake rolling a coin scooting up in a chair lighting match stick chewing runningFriction between our foot and footwear and the ground help us to walk without slipping. 2 Friction between the treaded tyres and the rough surface of the road help vehicles to move safely. 3 Friction between pen and paper help us to write. 4 Friction between chalk help your teacher to write on the blackboard. 5 We are able to light a matchstick due to friction. 6 We can easily tie a knot with the help of friction. 7 We can easily fix a nail on the wall due to friction. 8 Friction between screws and ball bearings of machines. 9 Friction between your hand and a glass helps you to hold it. 10 Friction between brake pads and tyres helps to stop a moving vehicle.

To walk to write to add break to

some cases of friction

Use lubricants and ball bearings and also make the surface smooth and reduce tge weight of the object

1. Lubricants are substances that, when applied to motor parts it reduces friction.these are applied to reduce friction especially where machines or motor parts rub against each other. Examples of lubricants are wax, grease and motor oil.
2. Ball bearings change sliding friction to rolling friction between bicycle wheels and axles, and other similar machines. This reduces the frictional force.
3. Polishing smoothens a surface. Observe the polished floors and furniture at home or in shops. Note how they feels like ? You will be definitlysaying that it is soft and smooth.
4. The force of friction is due to air, called drag which opposes the motion of the objects such as cars and air planes To reduce drag, cars, boats, ships and air planes are given a special shape called a streamlined shape. Fish too have streamlined bodies that let them move easily in the water.

lubricants and devices is what all i know. 

LUBRICANTS AND BALL BREAINGS CAN BE USED TO REDUCE FRICTION
 

uses of lubricants ,uses of fluids, carrom powder extra

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Various techniques adopted by human beings to reduce energy losses due to friction are : 1) Devices such as wheeks, ball bearings, roller bearings and air cushion or other types of fluid bearings can change the sliding friction into a much smaller type of rolling friction. 2)Many Thermoplastic materials such as nylon, HDPE and PTFE are commonly used in low friction bearings.

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1 Ball bearing
2 lubricant
3 making surface smooth
4 using wheels.

VARIOUS TECHNIQUES BEINDG ADOPTED BY HUMAN BEINGS TO OVERCOME FRICTION-

1.USING OF LUBRICANTS SUCH AS POWDER,KEROSENE OIL ETC.

1.a WE USE POWDER ON CARROM BOARDS TO DECREASE THE IRREGULARITIES ON THE SURFACE OF THE CARROM BOARD TO REDUCE THE FRICTION BETWEEN THE STRIKER AND THE BOARDWHICH HELPS TO MOVE THE STRIKER EASILY AND SMOOTHLY.

1.b WE USE KEROSENE OIL ON DOORS AS IT HELPS THE DOOR TO MOVE EASILY AND SMOOTHLY

2. USING BALL BEARINGS- THIS PHENOMENA IS USED ON MACHINES IN WHICH TINY STEEL BALLS ROLL OVER EACH OTHER WHICH DECREASES FRICTION.

3.USING OF AIR CUSHIONSON MACHINES

4. USE OF STREAMLINING-IT HELPS TO CUT DOWN THE AIR CUT DOWN THE FLUID CURRENTS WHICH HELPS THEM TO OVERCOME THE FLUIDS FRICTION.THE STREAMLINED BODY IS USED IN CARS, BUSES, SUBMARINES AND BOATS.BIRDS AND FISHES ALSO HAVE STREAMLINED BODY.

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mam

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