Alow-carbon steel was found to follow o= (717 mpa)e^0.234. if the initial diameter was 12.8 mm and was reached duing the tensile test of this steel. 4, the diameter at fracture was 9.27 mm, calculate the maximum tensile load (kn) that during the tensile test of this steel.

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)