Problem: 10 (of 30) Do not round intermediate answers. Give your final answer(s) to three decimal places. Check your units. If the frictional moment at the pivot O is 4 N-m in the counter-clockwise direction, determine the tensions in the two cables which are securely attached to the grooved drum. The drum has a mass of 5 kg and a radius of gyration ko = 220 mm. 12 kg T (left)= T (right)= 400 mm 280 mm 17 kg N Z Z N Check Answer for this Problem Close

Refer to Figure P6.4. A strip load of q = 900 lb/ft2 is applied over a width B = 36 ft. Determine the increase in vertical stress at point A located z = 15 ft below the surface. Given: x = 27 ft. Figure P6.4

For the beam shown: (a) determine the distance a for which the maximum positive and negative bending moments in the beam are equal; and (b) draw the corresponding shear and bending moment diagrams for the beam.

A beam is part of the framing system for the floor of an office building. The floor is subjected to both dead loads and live loads. The maximum moment caused by the service dead load is 45 ft-kips, and the maximum moment for the service live load is 63 ft-kips (these moments occur at the same location on the beam and can therefore be combined). a. If load and resistance factor design is used, determine the maximum factored bending moment (required moment strength). What is the controlling AISC load combination? b. What is the required nominal moment strength for a resistance factor of 0.90? c. If allowable strength design is used, determine the required moment strength. What is the controlling AISC lead combination? d. What is the required nominal moment strength for a safety factor of 1.67?