Dimensional Analysis And Its Applications
Chapter Name : Units And Measurements |
Sub Topic Code : 101_11_02_10_03 |
Topic Name : Dimensional Analysis And Its Applications |
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Sub Topic Name : Deducing Relation Among The Physical Quantities |
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Introduction
Relation between
different physical quantities can be obtained using method of dimensions.
Pre-Requisites:
Idea about dimensions
of physical quantities.
Activity:
It is method of checking relations between physical quantities by
identifying their dimensions.
Real Life Question:
How to verify complex relationship between
different physical quantities?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Dimensional analysis | It is method of checking relations between physical quantities by identifying their dimensions. |
| Dimensions | They are the powers to which the base quantities are raised to represent that quantity. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Dimensional analysis | To know about Dimensional analysis |
Real life uses :
It is used to find
relation between physical quantities.
Places to visit :
Physics lab.
Practical examples around us
| Examples | Explainations |
|---|---|
| Time period of pendulum | Method of dimensions can be used to verify equation of time period of simple pendulum. |
What you learn in Theory:
Both side of equation
must have same dimensions.
What you learn in Practice:
Method of dimensions
can only test validity of equation; it cannot be used to find dimensionless constant
in equation.