Viscous effects in fluids only appear when fluids undergo strain $($i$.$e$.$ deformation$),$ so viscous fluids can be treated as inviscid if they$$re stationary. Consider a dam that holds back a reservoir of water $($density $\backslash$rho $)$ with depth H$.($The system is two dimensional$-$ nothing varies in the out$-$of$-$page direction$).$ What horizontal force Fd $($per unit span$)$ is required to hold the dam in place? Compute this using the Bernoulli equation.