Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 58
lifted to a higher level thanthe source of supply. In earthquake shocks accompanied by gyratory movements ofthe ground, heavy chimneys andisolated columns are sometimesleft twisted around on their foundations. The inertia of the massof the chimney or column causesit to remain fixed while the… … 48 MECHANICS. steady pull downward on B will cause the string to breakabove J., because the tension of the upper string is equalto the weight of A in addition to the pull on B. If, however, a sudden pull be applied to B the stringwill invariably break below A. The inertia of the weightA is so great…
Physics
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