Why is it desirable to reduce friction between moving parts of machines
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IT IS DONE SO AS TO INCREASE THE EFFICIENCY OF THE FUEL.
IF THERE IS MORE FRICTION, THEN THE ENERGY FROM THE FUEL WILL BE USED FOR HEAT ENERGY AND NOT FOR MECHANICAL ENERGY. SO THE EFFICIENCY OF THE FUEL WILL BE REDUCED.
IF THE FRICTION IS REDUCED, THEN MOST OF THE ENERGY FROM THE FUEL WILL BE USED FOR MECHANICAL ENERGY AND THUS THE EFFICIENCY OF THE FUEL WILL BE INCREASED.
IF THERE IS MORE FRICTION, THEN THE ENERGY FROM THE FUEL WILL BE USED FOR HEAT ENERGY AND NOT FOR MECHANICAL ENERGY. SO THE EFFICIENCY OF THE FUEL WILL BE REDUCED.
IF THE FRICTION IS REDUCED, THEN MOST OF THE ENERGY FROM THE FUEL WILL BE USED FOR MECHANICAL ENERGY AND THUS THE EFFICIENCY OF THE FUEL WILL BE INCREASED.
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Answer:
because if we don't do that then the machine will stop working.
Explanation:
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