Brake pads in a bicycle stop the wheel by:
ARemoving air around the wheel
BIncreasing the force of friction between the pads and the rim
CReducing the friction between the wheel and the road
DPulling the wheel magnetically
Answer & Solution
Correct answer: B. Increasing the force of friction between the pads and the rim
When the brake lever is pressed, the brake pads press against the rim. Friction between the pads and the rim slows down (and eventually stops) the wheel. Brakes work by deliberately increasing friction.
Related questions
The drag force on an object moving through a fluid depends on:Which of the following helps INCREASE friction deliberately?Why does the jar of a kitchen mixer become hot after running for a few minutes?Two boxes A and B have the same weight and the same surface in contact with the floor. BoxBall bearings are used in the wheel axles of bicycles and in motors.
 is caEven surfaces that look perfectly smooth — like glass or polished steel — have a large num