A thin plate 2 m × 2 m is placed edgewise in a flow of oil. Calculate the boundary layer thickness and the shear stress at the trailing edge when the free stream velocity is 2 m/s. (RD of oil = 0.85...

A thin plate 2 m × 2 m is placed edgewise in a flow of oil. Calculate the boundary layer thickness and the shear stress at the trailing edge when the free stream velocity is 2 m/s. (RD of oil = 0.85 and v = 10^–5
m²
/s)

If the boundary layer over a flat plate, kept parallel to the flow, is laminar find the ratio of the skin friction drags on the front half of the plate to the rear half.