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Posted by on Sunday, January 10, 2010 at 7:27pm.

The strength of a cable is proportional to the square of its diameter. If a 2-cm cable will support 800kg, how much will a 3-cm cable support?

  • Math - , Sunday, January 10, 2010 at 7:49pm

    T=constant*dia^2

    800=k*2^2
    T3=k*9

    divide one equation by the other

    T/800= 9/4
    solve for T

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