The Law Of Inertia
Chapter Name : Laws Of Motion |
Sub Topic Code : 101_11_05_03_01 |
Topic Name : The Law Of Inertia |
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Sub Topic Name : The Law Of Inertia |
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Introduction
We will learn about the tendency of the body to resist change.
Pre-Requisites:
Knowledge about motion.
Activity:
Observe why we are unable to move a heavy weight inspite of applying force on it.
Real Life Question:
Why we feel a jerk in forward direction when a bus suddenly applies brake?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Inertia | Tendency of a body to resist the change it its state. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| A ball, a ramp | Roll a ball from the ramp and see how far the ball goes. |
Real life uses :
Every thing around us like in walking, vehicles, lifting, moving etc.
Places to visit :
Your home has enough material to see the science behind it.
Practical examples around us
| Examples | Explainations |
|---|---|
| Vehicles | We feel a forward push in a bus when sudden brake is applied. |
What you learn in Theory:
If the net external force is zero, a body at rest continues to remain at rest and a body in motion continues to move with a uniform velocity. This property of the body is called inertia. Inertia means ?resistance to change?.
What you learn in Practice:
When a body is to be moved or to be stopped we need to apply an external force on it to overcome its inertia.