Question

What is rotational dynamics?

Answer 1

Hint: The hint to the above question lies in the question itself. The dynamics of a body involves the parameters of the body when it is in motion i.e. when it is in a dynamical system. The word rotation implies a particle or a body moving in a circular path i.e. performing rotation. The idea combined effect of the above information can be used to understand rotational dynamics.

Complete step-by-step solution:
The rotational dynamics involves a brief study of a system which is rotating dynamically. Rotation as well as translation of a body can also occur at the same time which also can be classified into rotational dynamics. We study the rotational dynamics of a body when the body rotates with respect to the system and not vice versa. The rotational dynamics of a body can be studied by defining various parameters of a body rotating i.e. angular displacement, angular velocity, angular acceleration and so on. The determination of all the above parameters is called as rotational dynamics

Note: It is to be noted that the rotational dynamics at a ground level involves the understanding of above parameters only. The rotational dynamics also involves obtaining the relation between the intrinsic properties of the body such as centre of mass, moment of inertia etc. All the parameters that are involved in study of a body in motion in one or two dimensions, the same applies for a body undergoing rotational motion. In fact the rotational motion can be treated like a motion in one dimension or two dimension, by considering the net effect on the body along its centre of mass.