Explain why objects moving in fluids must have special shapes.
When a frame actions via a fluid, it reports an opposing pressure which attempts to oppose its movement thru the fluid. This opposing pressure is referred to as the drag pressure. This frictional pressure relies upon at the form of the frame. By giving items a unique form, the pressure of friction appearing on it may be minimised. Hence, it turns into less difficult for the frame to transport thru the fluid.
