ves between two parallel,

velocity. The two stat surfaces at a constant

cm apart such that the ution surfaces are spaced $4$

moving plate that the upper distance between the

the

yiscostium between them is filled with oil whose

viscosity is $9$ Poise. The part of the plate immersed in oil at any given time

is $2\mathrm{.}5-m$ long and $0\mathrm{.}6-m$ wide. If the applied drag force is $600$ N $.$

Determine:

The velocity of the moving plate required to maintain this motion

The corresponding shear forces on the upper and lowers sides of the

moving plate and the utilized power in overcoming the viscous resistance

Quc Ion $3(8$marks$)$

Water is pumped from a lower reservoir to a higher reservoir by a pump that provides $18$ kW of useful mechanical power to the water. The free surface of the upper reservoir is $40$ m higher than the surface of the lower reservoir. The inlet and outlet diameters of the pipe connected to the pump are $8$ cm and $12$ cm $,$ respectively If the flow rate of water is measured to be $0\mathrm{.}035\frac{m^3}{s},$ determine:

$3\mathrm{.}1$ The irreversible head loss of the system and the lost mechanical power during this process...

$3\mathrm{.}2$ The pressure rise by the pump. $(5$ marks$)(3$ marks$)$