mine the forces in cables AC and AB needed to hold the 20-kg ball D in equilibrium. Take F-20N nd d = 1 m. 1,5m 1m d AF 2m D ) The horizontal truss shown below is supported by a pin at A and a roller at H. Compute the forces members EG, EF and DF and indicate whether the members are in tension or compression. 5kN 15LN 7LN F D C E G 4 m 5 m 5 m 4 m L-18m 3-) Locate the centroid X of the beam's cross-sectional area, and then determine the moment of inertia of the area about the centroidal y' axis. 10mmx 180 mm 10mm 10% 10mm 100mm 100mm