A concrete test beam 2 x 2 x 12 in supported at two points, Ask an Expert

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A concrete test beam 2 X 2 X 12 in., supported at two points 0.2241 from the ends, was found to resonate at 1690 cps.

If the density of concrete is 153 Ib/ft³, determine the modulus of elasticity, assuming the beam to be slender.

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