Question

Collect information about various new techniques being adopted by human beings to reduce energy losses due to friction ? Prepare a report on it

Answer 1

various new techniques being adopted by human beings to reduce energy losses due to friction  are :
 1) Devices: such as wheels, ball bearings, roller bearings, and air cushion or other types of fluid bearings can change 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.
3) Lubricants: A common way to reduce friction is by using a lubricant, such as oil, water, or grease, which is placed between the two surfaces, often dramatically lessening the coefficient of friction. .
4).Superlubricity, a recently discovered effect, has been observed in graphite: it is the substantial decrease of friction between two sliding objects, approaching zero levels. A very small amount of frictional energy would still be dissipated.Lubricants to overcome friction need not always be thin, turbulent fluids or powdery solids such as graphite and talc; acoustic lubrication actually uses sound as a lubricant.
5)Another way to reduce friction between two parts is to superimpose micro-scale vibration to one of the parts. This can be sinusoidal vibration as used in ultrasound-assisted cutting or vibration noise, known as dither.

Answer 2

Explanation:

Various new techniques adopted by human being to reduce friction are : devices such as wheels ball wearing and air

thermoplastic material such as nylon hdpe and ptfe.

lubricants like oil water or grace

super duplicity recently discovered affect has observed in graphite

another way to reduce friction between two parts is to Superman's micro scale vibration to one part