A 4-m-long rigid beam is supported by a pinned connection and cable. the beam weighs 2.0 kn and hangs horizontally when unloaded When the beam is not loaded the solid cable is 4.00 m long and has a solid area of 175 mm1 Steel used in the cable has modulus of elasticity of 200 000 MPa. When loaded, the beam carries a 10-kN/m uniformly distributed load. Neglecting the weight of the cable, approximate the following: (a) The change in length of the cable when the beam is under load (b) The change in elevation of point b when the beam is under load