Question

write 2 methods by which friction can be minimised ? class 8 sciences​

Answer 1

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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

Answer 2

Answer:

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2 घर्षण कमी केला जाऊ शकतो वर्ग 8 विज्ञान पद्धती लिहा

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1. By using lubricants - Lubricants make surfaces smooth by filling the unevenness of two surfaces and by forming a very thin layer between the surfaces, as a result of which friction gets reduced. 2. By using ball bearings - Ball bearings reduce friction by making the body roll.