Irene asked in Science & MathematicsPhysics · 3 months ago

The diagram shows a simplified model of a building with four identical heavy floors?

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  • Whome
    Lv 7
    3 months ago
    Favorite Answer

    Let the force carried by the top rods be F

    The bottom rods carry a force of 4F

    Stress is force per unit area

    area is proportional to the square of the diameter  A = πD²/4

    F/(πd²/4) = 4F / (πD²/4)

         πD²/4 = 4πd²/4

              D² = 4d²

               D = 2d

            D/d = 2

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