Question

A bar having a square cross section of 30 mm by 30 mm is 2 m long and is held upward. If it has a mass of 5 kg/m, determine the largest angle θ, measured from the vertical, at which it can be supported before it is subjected to a tensile stress along its axis near the grip.

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We have the following data:

An inclined bar with angle θ\theta with respect to the y-axis

\bullet Cross-section of the bar Dimensions: 30 mm ×\times 30 mm \bullet Length of the bar LL = 2 m \bullet Mass per unit length mm = 5 kgm\frac{\text{kg}}{\text{m}}

Required: \Rightarrow Largest angle θ\theta without developing any tensile stress

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