Pseudojõud

Pseudojõud, or fictitious forces, are apparent forces that arise in non-inertial frames of reference. They are not true forces in the sense of arising from physical interactions between objects but rather are mathematical constructs used to apply Newton's laws of motion within a rotating or accelerating coordinate system.

The most common examples of pseudojõud include the centrifugal force, the Coriolis force, and the Euler force. The centrifugal force appears in rotating frames and acts radially outward, seemingly pushing objects away from the axis of rotation. The Coriolis force acts perpendicular to the velocity of an object and the axis of rotation, causing a deflection in its path. The Euler force arises when the angular velocity of a rotating frame is changing.

These forces are crucial for describing motion in systems like the Earth's atmosphere and oceans, where phenomena like weather patterns and ocean currents are significantly influenced by the Earth's rotation. Without considering pseudojõud, it would be impossible to accurately predict the motion of objects within these non-inertial frames using Newtonian mechanics. While they are not real interactions, they are essential for maintaining the validity of Newton's laws in accelerated reference frames.