(a)"Friction is both a friend and a foe". Justify with suitable examples
(b)Write some methods to reduce friction?
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Answers
Answer:
ans of a is attached
Explanation:
ans of b)
Methods for decreasing friction:
Make the surfaces smoother. Rough surfaces produce more friction and smooth surfaces reduce friction.
Lubrication is another way to make a surface smoother. A lubricant is a slippery substance designed to reduce the friction between surfaces.
Make the object more streamlined. A streamline shape is one that allows air or water to flow around it easily, offering the least resistance.
Reduce the forces acting on the surfaces. The stronger the forces acting on the surfaces, the higher the friction, so reducing the forces would reduce the friction.
Reduce the contact between the surfaces. Spheres are the best shape for reducing friction because very little of a spherical object is in contact with the other surface.
