4) A pipeline of 175 mm diameter branches into two types which delivers the water at atmospheric pressure. The diameter of branch one which is at 35° counter- clockwise to the pipe axis is 75 mm and the velocity at the outlet is 15 ⁄. Branch two is at 15° with the pipe centre line in the clockwise direction and has a diameter of 100mm, also at an outlet velocity of 15 ⁄. The pipes lie in a horizontal plane. Determine the magnitude and direction of forces on the pipes?