What is the physics principle behind the question :'Why
does the leaning tower of Pisa not fall?' I would like information
revoloving around torque, centre of gravity.etc.
A structure is stable and will not fall if the vertical line through its
centroid falls within the footprint of the structure.
Dr. Ali Khounsary
Advanced Photon Source
Argonne National Laboratory
Argonne, IL 60439
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Update: June 2012