Explain why there is no such thing as CENTRIFUGAL force, and explain IMPULSE?

Question

Explain why there is no such thing as CENTRIFUGAL force, and explain IMPULSE?

Answer 1

What do you mean, no such thing as centrifugal force? It exists.

Answer 2

Centrifugal force (from Latin centrum "center" and fugere "to flee") is a term which may refer to two different forces which are related to rotation. Both of them are oriented away from the axis of rotation, but the object on which they are exerted differs.



A real or "reactive" centrifugal force occurs in reaction to a centripetal acceleration acting on a mass. This centrifugal force is equal in magnitude to the centripetal force, directed away from the center of rotation, and is exerted by the rotating object upon the object which imposes the centripetal acceleration. Although this sense was used by Isaac Newton,[1] it is only occasionally used in modern discussions.[2][3][4][5]

A pseudo or "fictitious" centrifugal force appears when a rotating reference frame is used for analysis. The (true) frame acceleration is substituted by a (fictitious) centrifugal force that is exerted on all objects, and directed away from the axis of rotation.

Both of the above can be easily observed in action for a passenger riding in a car. If a car swerves around a corner, a passenger's body seems to move towards the outer edge of the car and then pushes against the door.



In the reference frame that is rotating together with the car (a model which those inside the car will often find natural), it looks as if a force is pushing the passenger away from the center of the bend. This is a fictitious force, not an actual force exerted by some other object. The illusion occurs when the reference frame is the car, because that ignores the car's acceleration. A number of physicists treat it much as if it were a real force, as they find that it makes calculations simpler and gives correct results.



However, the force with which the passenger pushes against the door is very real. That force is called a reaction force because it results from passive interaction with the car which actively pushes against the body. As it is directed outward, it is a centrifugal force. Note that this real centrifugal force does not appear until the person touches the body of the car. The car also exerts an equal but opposite force on the person, called "centripetal force". In this case the centrifugal force is canceled by the centripetal force, and the net force is zero, thus the person does not accelerate with respect to the car.

Answer 3

Have you ever come across a term in physics like "pseudoforce" ? if yes then centrifugal force is classified as "pseudoforce" . But in case if you don't know what is "pseudoforce" , then let me tell you that it is the term used in physics when motion of a body under consideration is studied with respect to an another accelerating body(known as non inertial frame of reference) . So Centrifugal force is taken into consideration while studying circular motion in non-inertial frame .

Now the answer to the second question is very much simple . A large force acting on a body for very short time interval is called impulsive force . In a smooth languege it can be explained as impulse (J)=force(F) * time(t) . Also impulse is equal to change in momentum of a body .

F=ma

hence, F=m(v - u )/t

hence,F*t=mv - mu

hence,J=mv - mu.

Now i hope you will understand better .

Answer 4

A stress is born in user-friendly words throughout interplay between 2 1000's even if its an atom or the earth interacting with the solar's mass. The interplay includes the substance of area and the 1000's themselves. Rotational forces includes determining the sumation of vectors. Einstein did it with multidimensional vectors noted as tensor.it get somewhat tedious to unravel a 10 x 10 matrix representing diferential equation. So truly what's termed centrifugal stress is wraping up area unto itself. The centrifugal stress isn't unique; at the same time as that is born ,yet another stress of interplay takes position ,noted as centripetal stress..those stress do no longer exist untill rotation of 1000's round one yet another takes position.So centrifugal stress exists yet on condition that centripetal stress exists.those forces are in persistent action and the cost of those transferring forces is function of gravity ability. And gravity ability that's saved contained in the substance of area is interior one among those gravity stress.

Answer 5

Think of it like this.



If you are in a car and the driver hits the brakes, you fly forward. Now, you know that this is not because you are being pushed forward by a force but because the car is slowing down. You may even push forward with your hands to stop yourself hitting the dash - but you know that the force you feel is the dash pushing back on you to slow you down with the car.



Thats easy.



So why is it so hard when the acceleration is because of circular motion. If you go round a left hand corner in a car the car is accelerating to the left. And just like with braking, you are thrown to the outside edge. And if you push on the door to stop yourself what you feel is the force of the door pushing you into the corner to keep you moving with the car.



This force is centripetal - it point towards the centre of curvature of the motion.

Answer 6

CF does exist for practicality sake- just that it's actually from of linear force- impulse is moment of acceleration