![]() ![]() rigid body undergoing both translational motion and rotational motion. Here in the study of rotational mechanics, this point mass or point particle model is inadequate for problems involving rigid body motion i.e. In this process we represent object under consideration as a point mass and shape and size of the object remains irrelevant while discussing the particular problem under consideration. Till now in our study of force and laws of motion we have always analyzed motion of an object by considering it as a particle even when the size of the object is not negligible. ![]() We will also look at rotational motion examples from activities around us in our daily life. After completing this lesson you would be able to explain Rotational motion and know the difference between rotational motion and circular motion. In addition to this you are also aware of types of motion in physics. Here in this article about rotational motion I am assuming that you are comfortable in describing motion in physics. We can not explain the concepts of wobbling or precession by using fixed axis hypothesis for rotational motion.( wikipedia) During rotational motion there is also a possibility of axis changing its orientation. Rotational motion of a rigid body around a fixed axis is a special case of rotational motion. If a rigid body is moved in such a way such that all the particles constituting it undergoes circular motion about a common axis then that type of motion is rotational motion. Pure Rotational motion is the motion of a body about a fixed axis. ![]()
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