Question

In some situations, I oppose the motion . in other situations, I facilitate the motion but , I always oppose the relative motion between two moving surfaces . Put some lubricant , and I become small there. Make the moving surfaces rough I make the movement tough. I may be-static , sliding or rollingbut whenever two surfaces are in motion I am always there , Tell me who i am!?



plzz fast ans i will mark you as brainlist but if only when right and not copied frm Google.​

Answer 1

Heyya!

Your answer to the question is friction.

1. What is friction?

• Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult.
• Friction always works in the direction opposite to the direction in which the object is moving, or trying to move. Friction always slows a moving object down.
• The amount of friction depends on the materials from which the two surfaces are made. The rougher the surface, the more friction is produced. Friction also produces heat. If you rub your hands together quickly, you will feel them get warmer.
• Friction can be a useful force because it prevents our shoes slipping on the pavement when we walk and stops car tyres skidding on the road. When you walk, friction is caused between the tread on shoes and the ground. This friction acts to grip the ground and prevent sliding.
• Sometimes we want to reduce friction. For example, we use oil to reduce the friction between the moving parts inside a car engine. The oil holds the surfaces apart and can flow between them. The reduced friction means there is less wear on the car's moving parts and less heat produced.

Hope it helps you!

Be Brainly!

Answer 2

Answer:

Friction

Interesting question !

By the given clues we can guess the answer

》It opposes the motion

friction is a force which opposes motion

》if some lubricant is applied it get reduced

friction get reduced by applying some lubricant like greese.

》it is of static , sliding and rolling

friction is of three types

•static friction

•sliding friction

•rolling friction

Therefore the answer is "FRICTION "