Dummy solder

The resulting vector of gravity and centrifugal force during movement is referred to as the apparent perpendicular . The apparent perpendicular can be graphically represented by a parallelogram of forces .

Through the force of gravity, also called gravitation, every body on earth experiences an acceleration directed downwards towards the center of the earth. The magnitude of this acceleration in Central Europe is approx. 9.81 m / s² and is referred to as 1 g. At rest, the direction of the apparent perpendicular is identical to the direction of gravity ( weight ) and then points to the center of the earth.

It is different with cornering acceleration. In order to stay in balance, a motorcyclist has to " lie in the curve " when driving through the curve according to the dummy vertical . The same applies to an aircraft that is supposed to fly a coordinated curve. The measuring instrument in the aircraft is the spherical level . With a coordinated flown curve, you will not feel anything in the aircraft apart from possibly increased contact pressure. Therefore, the pilot has to use the instruments for assistance under instrument flight conditions.

In addition to the centrifugal force, acceleration and braking forces also cause a difference between the apparent perpendicular and the "correct" perpendicular (also known as the rest perpendicular ). For example, a sprinter stands at an angle during the acceleration phase shortly after the shot and straightens up more and more when the speed no longer increases. The spine represents the dummy plumb bob.