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# File Assignment1.pdf - ASSIGNMENT NO.1 Assignment problem...

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ASSIGNMENT NO.1 Assignment problem #1 (15 out of 100) A solid circular post ABC supports a load 1 2500 P kN = at the top. A second load 2 P is uniformly distributed around the shelf at B . The diameters of the upper and lower parts of the post are 1.25 AB d m = and 2.25 BC d m = , respectively. (a) Calculate the normal stress AB σ in the upper part of the post. (b) If it is desired that the lower part of the post have the same compressive stress as the upper part, what should be the magnitude of the load 2 P ? Assignment problem #2 (15 out of 100) A car weighing 130kN when fully loaded is pulled slowly up a steep inclined track by a steel cable. The cable has an effective cross- sectional area of 490mm 2 , and the angle α of the incline is 30 o . Calculate the tensile stress t in the cable. Assignment problem #3 (15 out of 100) A loading crane consisting of a steel girder ABC supported by a cable BD is subjected to a load 32 P kN = . The cable has an effective cross-sectional area

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## File Assignment1.pdf - ASSIGNMENT NO.1 Assignment problem...

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