Question

Explain the role of friction in case of bicycle brakes.What will happen if a few drops of oil are out on the rim?

Answer 1

A bicycle brake reduces the speed of abicycle or prevents it from moving. The three main types are: rim brakes, disc brakes, anddrum brakes. There have been various types of brakes used throughout history, and several are still in use today.

Most bicycle brake systems consist of three main components: a mechanism for the rider to apply the brakes, such as brake levers orpedals; a mechanism for transmitting that signal, such as Bowden cables, hydraulic hoses, rods, or the bicycle chain; and the brake mechanism itself, a caliper or drum, to press two or more surfaces together in order to convert, via friction, kinetic energy of the bike and rider into thermal energy to bedissipated.

Answer 2

by friction bicycle brakes holds the running tyre by which cycle stops.
If we put oil then there will be less friction and you will be not able to stop the cycle