![]() So we used a rigid body for rotational motion. The only extended body has a system of particles and a rigid body is a model of an extended body. Because all the particles of a system of particles can move with the same angular acceleration and angular velocities. Therefore it is necessary to treat the object as a system of particles. Since different particles of objects move with different velocities and accelerations. We used rigid bodies for rotational motion because objects can not be treated as particles when showing rotational motion. Why are we using a rigid body for rotational motion? Here in this article, we are going to discuss the pure rotational motion of rigid bodies. Combined transitional and rotational motions.The rigid body has three types of motions. The system of particles of these bodies changes its shape by external force thus the distance between particles is changed.Įlastic and plastic are examples of non-rigid bodies. Metal rods and cricket balls are examples of rigid bodies. Nothing in the universe is perfectly rigid. And the distance between the particles does not change with respect to time. The system of particles of these bodies does not change its shape by an external force. Solid objects have two parts namely rigid body and non-rigid bodyĪ rigid body has a specific shape and size. So naturally, it has no dimension therefore they have no system of particles. ![]() Liquid and gas are not extended bodies as they have no specific shape and size. As it has a specific shape and size and is denoted as a distribution of small mass elements. Such a type of body is also denoted by a rigid body. ![]() Or we can say these bodies are defined by dimensions. The kind of object that has a particular length, width, and height. System of particleĪn extended body consists of a system of particles which means it is formed of a collection of particles that are interconnected with each other. Here we will discuss the rotational motion, but first, we are going to define some of the important physical phenomena or things that are more important to create rotational motion. Therefore, rotational motion refers to anything spinning or moving in a circular path. Rotational means anything that rotates and any kind of motion of a body is identified by the change in position. What is the example of an object that first has rotational motion and then has linear motion? Which is the best example of rotational motion? What is the quantity used to measure an object’s resistance to change in rotational motion?
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