The simply supported beam in the Figure has a rectangular cross-section 150 mm wide and 240 mm high. (1) Compute the maximum bending stress in the beam.

(2) Sketch the bending stress distribution over the cross-section on which the maximum bending stress occurs.

(3) Compute the bending stress at a point on section B that is 35 mm below the top of the beam.

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)