The system is released from rest with no slack in the cable and with the spring stretched 100 mm. Determine the distance s traveled by the 11-kg cart before it comes to rest (a) if m approaches zero and (b) if m = 4 kg. Assume no mechanical interference.

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)