hi!! centrifugal force problem...?

Question

does the centrifugal force really exist? please tell me...or give me any sites that i can find my answer

Answer 1

This should solve all your confusion-
If you are standing in/on a rotating body, which starts to rotate about some point, You experience a force backwards (or rather, in the opposite direction) and you try to hold on to the body..
Its actually your inertia of rest (newtons first law of motion). You tend to stay at rest while the block goes on to rotate without you.
This force experienced is called centrifugal force (its a pseudoforce (fake))....its not you being subjected to a force and acceleration in the backward direction, but its your frame of reference which is experiencing a force and acceleration in the forward direction. So you add this fake force to make problem solving(calculations) easier. otherwise it appears as though a body is moving without being subjected to a force (violating newtons first law of motion)...
Centifugal force's counter part is Centripetal force (towards the center of the circle)....remember, it is WRONG to say that they are equal and opposite forces , or anything like that. they never exist together in the same frame of reference.
you would make calculations in the above problem using centripetal (totally excluding centrifugal force) force is you were standing outside/away from the body and watching it rotate. Now, according to you, an object on it expereinces a 'centrifugal' force, as it is simply trying to stay at rest as it was earlier.

Answer 2

Centrifugal force certainly exists and is the outward force experienced by a rotating body.

When a weight attached to a string is swung around and released, it flies off in a straight trajectory.

(This is the principle of operation of a centrifugal pump or compressor).

When held on to, at any point in its rotation the object is tending to move in a straight line but, the centripetal (opposing) force of the string is pulling inward with the same force as the centrifugal.

The object therefore moves in a circular path.

Answer 3

Yes. If you drive a car and pass a turn or a circle, you will feel force that 'throw' you (that's why you should not ride motorbike too fast at a turn, otherwise you will get thrown).

Another example is a roller coaster which makes 360 degrees vertical loop. It does not fall down when it reaches top, because its velocity gives it enough centrifugal force against gravity.

Formula of centrifugal force:
F=m*V/(R^2)
where:
F=centrifugal force
m=mass
V=velocity
R=radius of the loop/ the turn

Answer 4

it is incorrect to ask does it exist
it exists for any rotating frame of reference like any real force
but it is due to accelaration of frame itself .
but is not present in an inertial frame

if you are sitting in a bus/car taking a turn you are pushed to one side ,you experience a force that is centrifugal force