What is Pseudo Force and what is pseudo torque?How is it taken in non ideal rotation?

A Pseudo force (also called as fictitious force, inertial force or d’Alembert force) is an apparent force that acts on all masses whose motion is described using a non-inertial frame of reference frame, such as rotating reference frame.

Pseudo force comes in effect when the frame of reference has started acceleration compared to a non-accelerating frame.

The force F does not arise from any physical interaction between two objects, but rather from the acceleration ‘a’ of the non-inertial reference frame itself. As a frame can accelerate in any arbitrary way, so can pseudo forces be as arbitrary (but only in direct response to the acceleration of the frame). However, four pseudo forces are defined for frames accelerated in commonly occurring ways: one by relative acceleration of the origin in a straight line (rectilinear acceleration); two involving rotation: Coriolis force and centrifugal force and fourth called Euler force, caused by a variable rate of rotation