Question

A steel tape was exactly 30 m long at 18° C when supported throughout its length under a pull of 120 N and found to be 801 m. The mean temperature during the measurement was 26° C. Assume the tape to be supported at every 30 m, compute the true length of the line, given that the cross-sectional area of the tape=0.04 cm?, the mass density of steel is 0.0077 kg/cm, the coefficient of expansion = 0.0000117 per ° = C and the modulus of elasticity = 21 x 106 N/cm²​

Answer 1

Answer:

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Explanation:

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