Question

physics class 6 chapter force
1. why friction decrease the efficiency of machines? ​

Answer 1

Answer:

 Friction reduces efficiency because when two surfaces slide past each other, friction resists their motion, and in real machines, some input work is always used to overcome friction.

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Answer 2

Answer:

Hey here is your answer......

Friction decreases the efficiency of machines because it makes the surface rough so that the machine has chances of the efficency of machines.

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