Question

write an equation for rotional motion

Answer 1

Rotation around a fixed axis or about a fixed axis of revolution or motion with respect to a fixed axis of rotation is a special case of rotational motion. The fixed axis hypothesis excludes the possibility of an axis changing its orientation, and cannot describe such phenomena as wobbling or precession.

Answer 2

Equation of rotational motion

In the figure, the angle θ(t) is defined as the angular position of the body, as a function of time t. ... With angular acceleration as constant we can derive equations for the angular position, angular displacement, and angular velocity of a rigid body experiencing rotation about a fixed axis