The Euler force, also known as the inertial force, is a fictitious force that arises when an object is rotating or accelerating in a non-inertial reference frame. It is named after Swiss mathematician Leonhard Euler who first described it in the 18th century.
The Euler force acts perpendicular to the direction of motion of an object in a rotating or accelerating reference frame. It causes objects to experience a centrifugal effect, pushing them away from the center of rotation or acceleration. This can affect the stability and trajectory of objects in motion.
The Euler force can be observed in many everyday situations, such as when a plane turns or banks, causing passengers to feel a sideways force, or when a car takes a sharp turn and objects inside the car appear to be pushed outward. It is also a crucial consideration in the design of satellites and other spacecraft.
The Euler force is a fictitious force and cannot be directly measured. However, its effects can be accounted for in calculations and simulations in order to accurately predict the behavior of objects in rotating or accelerating reference frames.
The Euler force is often compared to the Coriolis force, as both are fictitious forces that arise in non-inertial reference frames. However, the two forces act in different directions and have different effects on objects in motion. The Euler force is also related to the centrifugal force, which is the outward force experienced by objects in circular motion.