Each cable has a cross-sectional area of 100 mm2 and is made of an elastoplastic material for which σY = 345 MPa and E = 200 GPa. A force Q is applied at C to the rigid bar ABC and is gradually increased from 0 to 50 kN and then reduced to zero. Knowing that the cables were initially taut, determine
(a) the maximum stress that occurs in cable BD,
(b) the maximum deflection of point C,
(c) the final displacement of point C
