DRAG AND LIFT FORCE
A fluid flowing around the surface of an object exerts a force on it. Lift is the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is the component of the force parallel to the flow direction. Lift conventionally acts in an upward direction in order to counter the force of gravity, but it can act in any direction at right angles to the flow. If the surrounding fluid is air, the force is called an aerodynamic force. In water or any other liquid, it is called a hydrodynamic force. Drag and Lift Drag is defined as the resisting force acting on an immersed body in the direction of flow. Drag is responsible for boundary layer, flow separation. Lift is defined as a lifting force acting on an immersed body perpendicular to the direction of flow. For a symmetrical body there will be no lift force. Drag It is the resisting force acting on a body moving through a fluid (air or water)....