Question

Define friction. what are the different types of friction? Discuss some methods of increasing and decreasing friction.please write in detail​

Answer 1

Answer:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.

Friction is the force that opposes motion between any surfaces that are in contact. There are four types of friction: static, sliding, rolling, and fluid friction.

Static, sliding, and rolling friction occur between solid surfaces. ...

Fluid friction occurs in fluids, which are liquids or gases.

Use of lubricants: In machines, friction can be reduced by applying lubricants between the contact surfaces to fill the fine pores or depressions in the surfaces and make them smooth thereby reducing friction.

Polishing : unevenness of the surfaces can be reduced by polishing, thereby reducing the friction

Answer 2

Answer:

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 slows a moving object down.

There are four types of friction: static, sliding, rolling, and fluid friction.

REDUCING FRICTION

1. Use of lubricants: In machines, friction can be reduced by applying lubricants between the contact surfaces to fill the fine pores or depressions in the surfaces and make them smooth thereby reducing friction.
2. Polishing : unevenness of the surfaces can be reduced by polishing, thereby reducing the friction.

INCREASING FRICTION

Making the surfaces rough and the other by increasing the mass of the object that is moving. For example, the tyres of vehicles have treads (these are the 'designs' that you can see on the tyre surface), which increase the friction between the tyre and the road.

Explanation: