| Show explaining leaning tower the fact that ane leaning tower of pisa stands depends on the law of which insures the stability of a leaning building whose parts are firmly bound together and whose center of gravity does not project beyond the limits of the Ap supporting porting foundation tho the leaning tower has a spiral stairway within which in IB built with increased height on the sides of tho the lean and decreased height on the sides opposite tho the lean thus throwing a greater weight of masonry on the side opposed to the loan lean |