Question

Given one method to reduce friction​

Answer 1

Answer:

1. By using lubricants: friction increases as the roughness of the surface increases. Lubricants fill the fine pores and gaps between contact surfaces and reduces friction

2. Polishing surfaces: It makes the surfaces even and hence reduces friction

3. By using ball bearings: Rotating machines can be mounted on ball bearings. Rolling friction is lesser than sliding friction

4. By streamlining: streamlining reduces the area of contact and thus reduces friction

Answer 2

The methods to reduce friction are:-

1. Make the surfaces smoother. Rough surfaces produce more friction and smooth surfaces reduce friction.
2. Lubrication is another way to make a surface smoother. A lubricant is a slippery substance designed to reduce the friction between surfaces.
3. Make the object more streamlined. A streamline shape is one that allows air or water to flow around it easily, offering the least resistance.
4. Reduce the forces acting on the surfaces. The stronger the forces acting on the surfaces, the higher the friction, so reducing the forces would reduce the friction.
5. Reduce the contact between the surfaces. Spheres are the best shape for reducing friction because very little of a spherical object is in contact with the other surface.