Give examples to show that friction is both a friend and a foe.
Advantages of friction: (i) We are capin a position to stroll due to friction. (ii) Friction among the end of the pen and a paper lets in us to write. Disadvantages of friction: (i) Tyres and soles of footwear put on out due to friction. (ii) Friction among the exclusive components of machines produces heat. This can harm the machines.
