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Does brakes on a bicycle have a lot of friction or not much and is it useful or not useful?
Brakes are meant to have a lot of friction and it's useful.
What part of a bicycle has a small amount of friction?
The bearings
What is an example of a non-useful friction?
Racing because friction slows you down but you need to go fast.
How brakes stop a bicycle?
By creating friction between a moving part and a stationary part.
Which part of a bicycle are designed to decrease friction?
Any bicycle part that makes contact with another part but needs to move to function must have friction reduced. The wheels bearings, steering head, pedal bearings in both the hub and pedal, and the chain links all are designed for minimum friction but they also need lubricant.
Where does friction need to be small on a bicycle hub?
In the bearings that go between the stationary part - the axle, and the rotating part - the hub.
How can friction be un- useful?
In any part that you want to keep moving, like a spinning wheel, friction is just a nuisance.
How does braking stop a bicycle?
Same as on a car. Applying the brakes means that something stationary is pressed against a moving part. This generates friction, which turns speed into heat.It produces friction, because when the brake touches the rim of the bicycle, the bicycle slows down. (thats called friction) And after a while the bicycle stopsA stationary part is brought into contact with a rotating part. The resulting friction slows the bike down.
Where do you find friction in brakes of a bicycle brake?
A bicycle has high friction at the brakes, first and foremost. Then at places where the rider holds on to the bike, Grips and pedals. Between tires and road.
Where on a bicycle is friction not important?
In the bearings, where you want as little friction as possible.
When is friction useful when riding a bicycle?
At the contact between the rubber of the wheels and the road surface. At the contact between the wheel rim and the brake pads.
Is a bicycle rolling down a hill friction?
Yes, as the bicycle rolls down the hill, there is still some friction present between the wheels and the surface of the hill. This friction helps to slow down the bicycle's descent and eventually bring it to a stop.
