acroterion thanks for your reply yes i am totally outnumbered as regards a key point i don't believe that the rotating frame of reference transformation equations can be applied to non rotating situations but the edit war on the main page has not been about that issue recently i very carefully chose an example of centrifugal force that would actually be covered by those equations i did that deliberately in order to totally remove any possible excuse that they might have to delete it although i fully expected that wolfkeeper would delete it anyway because he deletes my edits systematically i wanted you to look at the pathetic excuses that they were giving to justify wolfkeeper's actions as you can see itub has been denying that a centrifugal force is involved in the outward radial acceleration of the marble along the groove it is that kind of blatantly dishonest denial that i wanted an administrator to look at basically they are covering up for wikistalking on the part of wolfkeeper you can see my latest reply to itub on the talk pages of centrifugal force