in a real beam, at an end, the boundary condition of zero slope and zero vertical displacement exists. In the corresponding conjugate beam, the boundary conditions at this end will be: (a) Shear forces = 0 and bending moment = 0 (b) Slope = 0 and vertical displacement = 0 (c) Slope = 0 and bending moment = 0 (d) Shear force = 0 and vertical displacement = 0 %3D

A symmetrical beam of length 300 mm is loaded with a force of 414 N downwards (positive z) and has the following equation for the vertical displacement: F w (x) = E, ( - +4) %3D Ely 8. The value of E is 200,000 Nmm 2 and the values of ly is 20 x 106 mm4 The maximum value of z for the beam cross section is 20 mm What is the maximum tensile stress in the beam at the point when x = 86 mm? Express your answer in Nmm2, as a number to 2 dp, without the units.

n=8