Inertia And Mass
Chapter Name : Force And Laws Of Motion |
Sub Topic Code : 101_09_09_03_01 |
Topic Name : Inertia And Mass |
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Sub Topic Name : Inertia And Mass |
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Introduction
The ease depends on the mass. Mass is a measure of what is know as Inertia.
Pre-Requisites:
Newton's First Law
Activity:
Using different masses and weights, attaching them to a spring balance, try to lift them. Mark the reading on the spring balance. What is the reading in Newton? Observe that it must be more for a heavier object.
Real Life Question:
Its an obvious conclusion that its easier to lift a paper box than a suit case of the same size. Why?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Inertia | The tendency for an object to remain unchanged |
| Mass | The amount of substance |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Weights, Masses, Spring Balance | Compare the ease of lifting an object to its mass |
Real life uses :
Getting Ketchup out of a bottle, we use inertia
Places to visit :
Children's Science Museum
Practical examples around us
| Examples | Explainations |
|---|---|
| The greater force required to move a heavier object | This is do to inertia being greater. Inertia is proportional to mass. |
| We tend to fall in front when sudden brakes are applied to the bus | This is also due to inertia of motion. We tend to be under state of motion even when the bus stops. And therefore, fall forward. |
What you learn in Theory:
Co-relation between inertia and mass
What you learn in Practice:
Explanation of few observations of everyday life due to the inertial property