10. What are the advantages and disadvantages of friction?
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due to friction only we can walk or run
due to friction many accident happens...
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Advantages of friction-
Friction enables us to walk freely.
It helps to support ladder against wall.
It becomes possible to transfer one form of energy to another.
Objects can be piled up without slipping.
Disadvantages of friction-
Oppose motion.
Produce heat in moving parts of machines/engines.
Produce noise in machines /engines.
Makes engines to consume more fuel, in other words it reduces the efficiency of engines.
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