MorganJ said:Okay so do I group the helicopter and the car as one by adding the two masses together? And if so, how do I get the lift force? I know it cannot just be by doing F=ma.
Lift force is a force that acts on a body in a fluid (such as air or water) in a direction perpendicular to the fluid's flow. It is responsible for the upward movement of an object, such as an airplane, in the fluid.
Lift force is created by the difference in pressure above and below an object as it moves through a fluid. This difference in pressure is caused by the shape of the object and the way it interacts with the fluid.
The factors that affect lift force include the shape and size of the object, the speed at which it is moving through the fluid, the density and viscosity of the fluid, and the angle of attack (the angle between the object's surface and the direction of the fluid flow).
In the context of lift force, two masses refer to the weight of an object and the weight of the fluid it displaces. When an object is placed in a fluid, the fluid exerts an upward force on the object equal to the weight of the fluid it displaces. This is known as Archimedes' principle and is related to lift force because it affects the overall buoyancy of the object in the fluid.
Lift force can be measured using a variety of methods, such as wind tunnel testing, computational fluid dynamics, and strain gauge measurements. These methods involve measuring the forces acting on an object as it moves through a fluid and analyzing the data to determine the lift force.