Dynamics Of Rotational Motion About A Fixed Axis
Chapter Name : System Of Particles And Rotational Motion |
Sub Topic Code : 101_11_07_12_01 |
Topic Name : Dynamics Of Rotational Motion About A Fixed Axis |
|
Sub Topic Name : Dynamics Of Rotational Motion About A Fixed Axis |
|
Introduction
Angular momentum, moment of momentum, or rotational momentum is a vector quantity that represents the product of a body's rotational inertia and rotational velocity about a particular axis.
Pre-Requisites:
Rigid body
Activity:
Electric fan.
Real Life Question:
What is torque?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Torque | Torque, moment or moment of force, is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Electric generator | A device that converts mechanical energy to electrical energy. |
Real life uses :
Equilibrium.
Places to visit :
Surroundings.
Practical examples around us
| Examples | Explainations |
|---|---|
| Flywheel | A flywheel is a rotating mechanical device that is used to store rotational energy. |
What you learn in Theory:
Rotation around a fixed axis is a special case of rotational motion. The fixed axis hypothesis excludes the possibility of a moving axis, and cannot describe such phenomena as wobbling or precession.
What you learn in Practice:
The kinematics and dynamics of rotation around a fixed axis of a rigid body are mathematically much simpler than those for free rotation of a rigid body; they are entirely analogous to those of linear motion along a single fixed direction, which is not true for free rotation of a rigid body.