Consider a rectangular plate of $0\mathrm{.}50$ m x $0\mathrm{.}50$ m dimensions. It weighs $500$ N and slides down aninclined plane making $30\backslash$deg angle with horizontal, at a velocity of $1\mathrm{.}75$ m$/$s$.$ If the $2$mm gap betweenthe plate and inclined surface is filled with a lubricating oil, estimate its viscosity, and express it inpoise as well as in Ns$/$m$2.$