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Re: [Phys-l] circular motion FBD

I think one must consider the common case in which the walking individual already has a forward momentum. When he then steps on a "frictionless" banana peel his forward foot will indeed slip backwards, but his C.M will continue forward - with a resulting rotation.

-----Original Message----- From: John Mallinckrodt
Sent: Tuesday, November 01, 2011 11:46 AM
To: Forum for Physics Educators
Subject: Re: [Phys-l] circular motion FBD

Anthony Lapinski wrote:

I think the banana peel reduces the friction coefficient, and thus the
static friction force is reduced. Your push backward exceeds this, so you
slip backward.

As Robert Cohen wrote, this isn't what most folks, especially cartoonists, think happen and I'm inclined to agree with them

http://bit.ly/vQ5mAP

John Mallinckrodt
Cal Poly Pomona

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