Question

डिवाइस इन व्हीकल यूज्ड टो रिड्यूस फ्रिक्शन​

Answer 1

Answer:

gear

gear is the device that is used to reduce friction

Answer 2

Instead, a rotating wheel can make work easier by reducing the friction between an object and the surface over which it moves. A wheel reduces friction by allowing the contacting surfaces to roll rather than to drag or slide over each other.

By polishing the surface, as polishing makes the surface smooth and friction can be reduced. Using lubricants such as oil or grease can reduce the friction between the surfaces. When objects are rolled over the surface, the friction between the rolled object and surface can be reduced by using ball bearings.