Question

new techniques adopted by human beings to reduce energy losses due to friction

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

Answer 2

to reduce friction we can apply Grease on the surface , lubricants and ball bearings are also used.....