Re: Banked road

["D.V.N.Sarma" <narayana@HD1.VSNL.NET.IN>]

It is the interpretation of the observer that an outward force is acting
on him when he is in a rotating frame. What he actually feels is the
pressure between him and sides of the car. Since he knows that
he is not exerting any muscular effort to produce this pressure and
since he cannot bring himself to believe that an inanimate thing like
a car can exert such a pressure on him, he interprets that some
mysterious force is pushing him towards the sides of the car. This
he calls 'centrifugal force'.

regards,

Sarma.
On 6 Nov 2001, at 12:15, Bob Sciamanda wrote:

> Ludwik,
> I think you already gave the reason - "centrifugal force" already has a
> defined meaning.  We use it to describe the outward force
> experienced/observed by an observer in a rotating frame, ie; the car
> driver and passengers.
> The force of the car on the wall is much like the force of a book on a
> table (on earth).  It is a contact force thwarted by a rigid constraint.
>
> Bob Sciamanda (W3NLV)
> Physics, Edinboro Univ of PA (em)
> trebor@velocity.net
> http://www.velocity.net/~trebor
> ----- Original Message -----
> From: "kowalskil" <kowalskil@MAIL.MONTCLAIR.EDU>
> To: <PHYS-L@lists.nau.edu>
> Sent: Tuesday, November 06, 2001 3:01 PM
> Subject: Re: Banked road
>
>
> > The car acts on the pipe and the pipe reacts with an equal and
> > opposite force. If the reaction is real (not fictitious) then
> > the action is also real in my frame of reference. We need a
> > name for the force with which the car acts on the cylinder.
> > What is wrong with CENTRIFUGAL?
> > Ludwik Kowalski