TOTAL: 50 MARKS. QUESTION ONE
(a) Define the terus
Torque
Lever
(b) Where must a 0,80 kN object be hung on a whim, horizontal, rigid 100-prestha
pushing up at one end supports tre-third as much as a woman pashming at the other the
situation is describe above is shown in the figure helew. The fome oferind by the Mini
represented by F. and that by the woman is 31.
16
SON
:) A uniform, 0.20-kN board of length L has two objects hanging from it: 300 Nexuty 13
one end, and 400 N at exactly 31/4 from the same end. What single additional to go the
board will cause the board to be in equilibrium?
16
TECTION TWO​

Two horizontal plates with infinite length and width are separated by a distance h in the z direction. the bottom plate is moving at a velocity u. the incompressible fluid trapped between the plates is moving in the positive x-direction with the bottom plate. align gravity with positive z. assume that the flow is fully-developed and laminar. if the systems operates at steady state and the pressure gradient in x-direction can be ignored, do the following: 1. sketch your system 2. identify the coordinate system to be used. 3. show your coordinates and origin point on the sketch. list all your assumptions. 5. apply the continuity equation to your system. nts of navier stokes equations of choice to your system 7. solve the resulting differential equation to obtain the velocity profile within the system make sure to list your boundary conditions. check units of velocity 8. describe the velocity profile you obtain using engineering terminology. sketch that on the same sketch you provided in (1). 9. obtain the equation that describes the volumetric flow rate in the system. check the units.

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

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