The space truss is supported by roller supports on the horizontalsurface at c and d and a ball and socket support at e. the y axispoints upward. the mass of the suspended object is 120 kg. thecoordinates of the joints of the truss are a: (1.6, 0.4, 0) m, b: (1.0, 1.0, -0.2) m, c: (0.9, 0, 0.9) m, d: (0.9, 0, -0.6) m, and e: (0, 0.8, 0) m. determine the axial forces in members ab, ac, andad.