Question 4 1p Four wheel loads rolls as a unit across a 18-m span. The loads are 50 kN, 40 kN, 30 kN, and 10 kN separated respectively by distances of 2 m, 4 m and 6 m. Compute the maximum shear in kN.

A wood beam AB on simple supports with spanlength equal to 10 ft is subjected to a uniform load ofintensity 125 lb/ft acting along the entire length of thebeam, a concentrated load of magnitude 7500 lb acting ata point 3 ft from the right-hand support, and a momentat A of 18,500 ft-lb (see figure). The allowable stresses inbending and shear, respectively, are 2250 psi and 160 psi.(a) From the table in Appendix G, select the lightestbeam that will support the loads (disregard theweight of the beam).(b) Taking into account the weight of the beam(weight density = 35 lb/ft3 ), verify that theselected beam is satisfactory, or if it is not, selecta new beam.

Three wheel loads rolls as a unit across a 12-m span. The loads are A-15 kN: B-25 kN, 2 m to the right of A; and C= 50 kN, 6 m to the right of B. Determine the moment at C in kN-m.