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How is friction helpfull?
Friction is helpful so you dont fall and friction helps things work much better than others. friction can also be helpfull when someone is driving. for an example on a slippery road frictio between the tires and the road stops the cars from sliding off the road and crashing. In sports friction stops the ball from going on forever. without friction we would just keep going on and on with out stopping. friction helps stop a bicycle from going on forever when we push the brakes in a bicycle it creates friction, which slows us down to a stop.
What part of a bicycle is a useful friction?
The brakes! And the tires (no friction = no traction).
Where on a bicycle is friction not important?
In the bearings, where you want as little friction as possible.
How does low air pressure in bicycle tires reduce the efficiency of the bicycle?
Flabby tyres produce more friction with the road.Less air pressure creates more surface friction, the less surface friction there is the better. (Example look at the very skinny narrow tyres on road racers as they don't need a lot of surface friction while mountain bikes have thick tyres as they need more friction)
How a bicycle is slowed down by dragging your feet along the ground?
Poorly, very poorly. Friction is what slows the bike down.
What Suppose a bicycle was coasting on a level surface and there was no friction. What would happen to the bicycle's speed?
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What part of a bicycle has a small amount of friction?
The bearings
How does friction help the breaks in a bicycle work?
Because friction stops momentum of force from moving the bike
Parts of a bicycle where friction can be maximised?
The brakes and the tire treads.
What is the force that makes you bicycle brakes work?
Friction and pressure.
What principle of fource is used on bicycle's brake?
Friction and leverage.
What is the coefficient of friction for bicycle tires?
twice as much as half of it!
