centrifugal forcecentripetal-forcenewtonian-mechanicsrotational-dynamicsrotational-kinematics
From my understanding, when you are in a turning car, assuming that you are not touching any part of the car except the seat, the frictional force from the seat is acting as the centripetal force. Is that correct?
But if it is, wouldn't this force then be exerting a moment on you, causing your upper body to move outward from the centre of rotation? Would this also be what you would perceive as centrifugal force in this case?
The net force on the water at the zenith is indeed downwards.
However a net force downwards does not mean that the motion will be downwards, only the acceleration.
And the water is indeed accelerated downwards at that brief instant, which is why it continues in a circular motion, rather than flying off horizontally as it would if there were neither centripetal nor gravitational forces acting on it.
Stop the water at the zenith by stopping the bucket, and the downward acceleration will act upon it for long enough for the water to indeed move downwards - by falling out of the bucket.
Friction forces act as a response, and opposite, to velocity, not force (that would be normal forces).
The car has a liner velocity in the forward direction, and it keeps moving indefinitely, ignoring any residual friction. Then, if the steering wheel is turned left, the front tires are rotated to the left, thus there appears a frictional force perpendicular to those tires. This force is caused by the tires resisting the movement, just as any other friction. The interesting thing is that tires can rotate freely only in one direction, but not in the perpendicular. Thus the friction appears only in that non-rotating direction.
This force will point not perpendicular to the car, but perpendicular to the tires. The difference is small, since the actual angle that the tires are rotated is quite small, particularly at high speeds. Also, once the car is rotated from the straight line, a small lateral friction will appear also in the back tires, because the velocity will no longer be aligned with the axis of the tires.
Best Answer
Correct, because that is the force that acts toward the center of your circular motion as seen from an inertial frame of reference, such as the road. But the force that you "feel" pushing you outward or inward (depending on the turn) is a fictitious force, called the centrifugal force. It's due to your inertia and not a physical force.
Your upper body doesn't move outward from the centre of rotation. It fails to move inward due to its inertia, and that is due to the fact that it is not rigidly attached to your lower body. In your non inertial (rotating) frame of reference, you attribute that moment to a the centrifugal force.
If you are referring to the perception that your upper body is forced outward, then yes, you would attribute that force as the centrifugal force.
Hope this helps.