Question

5. NORMAL TENSION. A steel tape having a cross-sectional area of 0.06cm.sq and a modulus of elasticity of 2.0x10^6 kg/cm.sq, weighs 0.03kg/m. Its length is 30.00m when standardized at pull of 5kg and supported throughout its length. Determine the tension at which the effect of sag will be eliminated by the elongation of the tape due to increased tension.

Answer 1

A = 0.06cm2 ; NL = 30.00m ; E = 2.0x106kg/cm2 ; PS = 5kg ; W = 0.03kg

$\text Try\space Pn = 5.78$

5.1683 = $\frac{2.12}{(5.1683-5)^{1/2}}$ = 5.1677kg

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