0
If the friction coefficient is too low the brakes may require excessive pressure?
Wiki User
∙ 6y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Can you not walk without friction?
You require friction in order to walk.
Which two surfaces would have the highest coefficient of friction?
rubber on dry concreat
What unit measures friction?
Friction is a force. I'll get back to that.Weight, which is usually measured in pounds or ounces or grams (depending on where you live or what you're measuring), has an official (SI) unit of newtons. An object's weight depends on the gravity affecting that object. (You probably know that you weigh less on the Moon than you do on Earth.)Gravity, which is a force, is consequently measured in newtons, just like weight. All forces are measured in newtons.Therefore, friction, which is a force, is measured in newtons.
Example of where you need friction?
The breaks on your car require friction to make the car stop. Friction between the souls of your shoes and the ground keeps you from sliding.
Why do automobiles require a push by heavy gear in the beginning of their movement?
According to the law of conservation of momentum, it is the nature of nature to keep objects moving at a constant velocity and in a straight line. That is true even when the speed of the object is zero. The amount of force needed to accelerate an object, which is to increase an object's velocity in the direction of travel, is directly proportional to the mass of the object. F=ma, where F is the resultant of all the forces acting on an object, m is the mass of the object, and a is the rate of acceleration of the object in the direction of the resultant force. Therefore it takes twice as much force to cause a certain rate of acceleration in a two-ton vehicle as it takes to cause the same rate of acceleration in a one-ton vehicle. Once the desired velocity is acheived, no more acceleration is needed; all that is needed to maintain that velocity is enough force to balance the forces of friction and air resistance. So if the vehicle were traveling in space, where there is no friction or air resistance, and if the object stays far enough away from the gravitational influences of large celestial bodies and dark matter, it would maintain the same velocity until the end of time. Another factor at work in this case is the difference between static coefficient of friction and kinetic coefficient of friction. Coefficient of friction is the ratio of the frictional force of two substances sliding against each other to the force holding the substances together. Any two substances, like rubber and rubber or ice and steel, have one static coefficient of friction, which pertains to starting a sliding motion from a standstill, and a kinetic coefficient of friction, which pertains to keeping a sliding object in motion once it is already moving. For a given pair of substances, the static coefficient of friction is always greater than the kinetic coefficient of friction; in other words, it always takes more force to start one object sliding on another than it does to keep it sliding. I know: vehicles don't slide, they roll. However, there is plenty of sliding going on in the engine, transmission, differential and wheel bearings.
Can you not walk without friction?
You require friction in order to walk.
Which two surfaces would have the highest coefficient of friction?
rubber on dry concreat
What kind of friction require more force to overcome rolling friction or sliding friction?
Sliding friction requires more force to overcome its friction.
Does ice on a road would increase friction?
If you are thinking about driving your car down the road, you require friction between your tires and the road to do so. This is known as kinetic friction, and in classical physics, the equation is as follows:f = mu*Nwhere mu is the coefficient of kinetic friction, N is the normal force (force acting perpendicular to the road by the road), and f is the force of friction acting parallel to the road at the point of contact with your tires.Introduce a thin layer of ice to the road and the coefficient of kinetic friction between your tires and the road drops drastically (mu in the above equation). As a result, your car cannot efficiently convert the force from your engine to a friction force between your tires and the road leading to rotational movement. Depending on the structure of the snow, it will also variably drop the coefficient of kinetic friction.This is why, if you are moving and hit a patch of ice, you may temporarily lose control because your car will be at the mercy of the surroundings and its momentum (or inertia) rather than the steering system (no friction means no response from the steering wheel). Alternatively, if the car is at rest, it will be difficult to start moving.tl;drIce or snow decrease the coefficient of static friction for a surface variably depending on structure. This will decrease the friction force between an object and the surface.
What unit measures friction?
Friction is a force. I'll get back to that.Weight, which is usually measured in pounds or ounces or grams (depending on where you live or what you're measuring), has an official (SI) unit of newtons. An object's weight depends on the gravity affecting that object. (You probably know that you weigh less on the Moon than you do on Earth.)Gravity, which is a force, is consequently measured in newtons, just like weight. All forces are measured in newtons.Therefore, friction, which is a force, is measured in newtons.
Does an airplane flying require friction?
it doesn't require friction but it requires the air to flow in the right way over the wings to make it rise or lower in the sky
Which type of transfer does not require the presence of matter?
Friction
How do you find the coefficient of static friction?
Use the formula: FsMAX=μsFN if you want to do it experimentally, get the two different surfaces, and angle one until the object on top starts moving. take the tangent of the angle that starts the objects sliding past one another, and that is your coefficient of static friction.
Example of where you need friction?
The breaks on your car require friction to make the car stop. Friction between the souls of your shoes and the ground keeps you from sliding.
Do the differentials of a 1996 Jeep Grand Cherokee Quadra-trac full time 4WD require a friction modifier added when changing the oil?
Rear diff does require friction modifier.
Why is friction not as useful in some winter sports?
Ice skating does not require any friction because the skater needs to glide on the ice and if there was any friction on ice the skater would have trouble to skate smoothly on the ice. That is why ice skating does not require any friction at all from my perspective.
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.
