List at least three situations where friction is undesirable to us. Also, suggest ways by which you can reduce/overcome friction in these cases..
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1) Wear and Tear of machinery is due to the friction. (2) A large amount of power is wasted in overcoming friction and the efficiency of the machines decrease considerably. (3) Excessive friction between rotating parts of a machine produces enough heatt and causes damage to the machinery
Make the surfaces little more smoother. ...
Lubrication is another way to make a surface smoother. ...
Make the object more streamlined. ...
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