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Re: That jerk again!



I think my elevator is exactly equivalent to Leigh'c car.
The force on his rolling tyres is normal to the roadway, and suddenly
becomes vertical. A step change of acceleration direction even if not
much in magnitude.

In my elevator the force tensioning the cable suddenly changes from
zero to one g..

Both changes are jerks, even though none of us are.


Clarence Bennett
Oakland University
Rochester, Michigan
248 370 3418
http://www3.acs.oakland.edu/physics/staff_info/Bennett.htm