Fluids of viscosities µ ₁ = 0.1 N.s/m² and µ ₂ =0.15 N.s/m² are contained between two plates(each plate is 1 m² in area). The thicknesses are h₁ = 0.5 mm and h₂ = 0.3 mm, respectively.Find the force F to make the upper plate move at a speed of 1 m/s. What is the fluid velocity at the interface between the two fluids?