. Sometimes, force of friction is desirable, give three examples.
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1. we are able to walk on road due to the friction between the ground and the soles of our shoes.
2.we are able to write on paper because of the friction between pen/pencil and the paper.
3.the application of brakes to stop a cycle,scooter or car, is possible only due to the friction between the brake lining and the rim of the wheel.
so,force of friction is desirable.
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