1.3 forces act on a ring. if the resultant force Fr has a magnitude and direction as shown, determine the magnitude andcoordinate direction angles of force 3.
2.A two story school has interior columns that are spaced 15 ft apartin two perpendicular directions. If the loading on the flat roof isestimated to be 20 lb/ft^2 determine the reduced live loadsupported by a typical interior column at
(a) the ground floorlevel, and
(b) the second floor level.