whats the difference between static friction and kinetic friction...i know it sounds easy but i have to explain it. and idk how. plz help.
2006-11-28 04:45:55 · 8 answers · asked by nybabyblu 6 in Science & Mathematics ➔ Physics
Ah, time to dig out the physics from last year. If I remember correctly:
Static friction is when the force of friction is greater than the force applied; thus basically what amount of force it takes to move the object from rest.
Kinetic friction is when you apply a force for an object to keep sliding. In this, it "breaks free" of your push and continues sliding.
And the force needed to initially break the static friction (to get it moving) is much more than what is needed to keep it going.
Hope this helped a bit. Just remember that static friction is associated with objects at rest and kinetic is objects in motion, and don't get the two mixed up. :*P
Have fun with physics!
2006-11-28 04:55:59 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Static friction is the friction that keeps something in place, for example: Try pushing a car, it is very hard to do because the force of static friction between the wheels and the ground is high.
Kinetic friction is the friction that opposes the motion of a moving object, for example: The friction between the tires and the ground while a car is driving.
If you combine the two, you see that you must put in a certain amount of force to OVERCOME the static friction and cause the object to start moving.
Static friction's coefficient of friction is set as a range between 0 and its maximum, producing a range of force you can apply to an object before it moves.
Kinetic friction's coefficient of friction is a single number and it represents one surface's friction with the second surface.
Hope this helps!
2006-11-28 04:52:58 · answer #2 · answered by sft2hrdtco 4 · 0⤊ 0⤋
I will be Brief!
Static Friction is when a body is at rest and there are bonds form between the body and the surface. There bonds must be broken to make the body move. The force in the bonding is called Static Friction.
Kinetic Friction is when a body is moving and there is a force which oppose its motion. This force is called Kinetic Friction.
2006-11-28 05:02:09 · answer #3 · answered by luqmaanmm 2 · 0⤊ 0⤋
Static friction for the same materials is larger than kinetic. Think of a car tire. Once it starts skidding, the friction is much less. Another example, if you are in a car and you pull the emergency brake full on, the back wheels will lock. At that point, the rear of the car will want to spin to the front, because the front tires have more friction. Kinda like shooting an arrow backwards, the drag is at the fletchings and the arrow will want to turn around. The car will have more friction in the front wheels and the car will have more drag in the front, so the car will want to turn around.
2006-11-28 04:53:51 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Kinetic friction is while moving. This you would use if trying to brake a movement. It also would refer to the friction overcome by the tires as an object keeps moving.(it is needed to make the car move forward) Also there is friction within the moving parts of an engine, lessened by oil.
Static friction is when object is at rest and you are trying to overcome friction to move it
2006-11-28 04:54:22 · answer #5 · answered by science teacher 7 · 0⤊ 0⤋
Static friction is related to surface and friction that comes in to force when you try to move the object. Rougher the surface greater the static friction. Kinetic friction comes about which opposes motion and speed.
2006-11-28 05:27:04 · answer #6 · answered by openpsychy 6 · 0⤊ 0⤋
The term static friction is used to describe friction between an object and a surface while at rest.
Once an object is moving we describe the friction as kinetic friction. It is the friction between and object and a surface once the object is moving.
2006-11-28 05:25:44 · answer #7 · answered by Big Rig 2 · 0⤊ 0⤋
Static friction is the force that opposes motion when something is at rest. You push but it doesn't slide yet. Kinetic friction causes the force that opposes motion once a thing is moving.
2006-11-28 04:51:29 · answer #8 · answered by Gene 7 · 0⤊ 0⤋
Static friction is the friction between two objects whose relative motion is zero. Dynamic friction is the friction between two objects sliding past one another. Static friction is greater than or equal to dynamic friction, which is why it "sticks" things together.
2006-11-28 04:51:34 · answer #9 · answered by poorcocoboiboi 6 · 0⤊ 0⤋
the force which opposes the change of stationary position of a body is called static friction and the force which opposes during the motion of the body is called kinetic friction.
usually static friction is greater than kinetic friction.
2006-11-28 04:51:29 · answer #10 · answered by raven 3 · 0⤊ 0⤋