Question

In the brake pads of bicycle, friction is ___________

(a) zero (b) nuisense (c) useful (d) both a and b​

Answer 1

Answer:

There is sliding friction between the brake pads and bike rims each time you use your bike's brakes. This friction slows the rolling wheels so you can stop.

Answer 2

Answer:

There is sliding friction between the brake pads and bike rims each time you use your bike's brakes. This friction slows the rolling wheels, so you can stop. So the answer is option C

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