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Does static friction or rolling friction causes a car tire to turn on the road?
static friction
What is the maximum speed with which a 2500 kg car can round a turn of radius 60 m on a level road if the coefficient of static friction between tire and road is 7?
Really? A coefficient of friction of 7? Unheard of. Probably 0.7 Use F = mv^2 / r where F will be the centripetal force as well as the frictional force, (mu)mg. Solve for v.
When a car is anticipating a turn isn't the steering wheel providing the centripetal force rather than the road friction?
No steering wheel won't provide the centripetal only the friction between the tyre and road provides the necessary centripetal. Steering would simply turn the wheels of the car to the desired direction.
How do friction help racing cars?
No, as far as movement goes, friction is not required. Too much friction would slow a car to a halt, remove it and it'd glide along. Granted you need friction to steer, but not to move. As far as engines go, friction is what wears them down over time. The key to making more efficient cars is less friction.
Why do bicyclists or motorcyclists lean into a curve?
I believe that the answer to this lies in the forces acting on the bike, namely the the frictional force, the turn itself is made by the wheels, which create friction sideways. The centripetal force acting in the turn is the friction, imagine a motorcycle driver that doesn't lean into the curve; because he doesn't lean, the friction is not strong enough to keep the driver from going in a straight line. However, when he leans, the static friction from the road increases, therefore the centripetal force increases. Note: There is an aspect of this question that also relates to Torque.
Does static friction or rolling friction causes a car tire to turn on the road?
static friction
Why is friction important for road safety?
Friction is the force that makes it possible to stop a car - a friction between wheels and road surface is a stopping force there. Also, friction is necessary for maneuvering - if the wheels slipped, you wouldn't be able to make a turn.
Why could cars not move without friction?
When the wheels of a car turn, friction causes the wheels to push back on the road, which in turn causes the road to push the car forward. Without friction the wheels would just spin in place. You can sometimes see this occur on icy roads, where there is very little friction.
What is a example of how friction can work for us?
Automobile brakes and clutches require friction. We also need friction between the tyres and the road when we accelerate or when we brake or when we turn a corner.
What is the maximum speed with which a 2500 kg car can round a turn of radius 60 m on a level road if the coefficient of static friction between tire and road is 7?
Really? A coefficient of friction of 7? Unheard of. Probably 0.7 Use F = mv^2 / r where F will be the centripetal force as well as the frictional force, (mu)mg. Solve for v.
What is the maximum speed with which a 1200- car can round a turn of radius 72 on a flat road if the coefficient of static friction between tires and road is 0.65?
7
