A layer of liquid is confined between two infinite parallel plates, separated by

a gap width of $0\mathrm{.}3$ mm$.$ The top plate is moved at a velocity of $0\mathrm{.}3$ m$/$s$.$ The

specific gravity of liquid is $0\mathrm{.}88$ and liquid viscosity is $0\mathrm{.}0065$ g$/$cm$.$s$.$Assuming linear velocity distribution in the liquid, calculate shear stress on the

upper and lower plates in Pa$.$ How will the shear stress value change if the

lower plate is also moving?