Question

(3) Which substance is used in the machine parts to
reduce fiction ?​

Answer 1

${\tt{\red{\underline{\underline{\huge{Answer:}}}}}}$

Friction can be minimized by using lubricants like oil and grease and by using ball bearing between machine parts.

Answer 2

Explanation:

• Friction can be minimized by using lubricants like oil and grease and by using ball bearing between machine parts. A substance that is introduced between two surfaces in contact, to reduce friction, is called a lubricant. Fluid friction can be minimized by giving suitable shapes to the objects moving in the fluids.