Free Fall
Chapter Name : Gravitation |
Sub Topic Code : 101_09_10_02_02 |
Topic Name : Free Fall |
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Sub Topic Name : To Calculate The Value Of 'G' |
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Introduction
The weight of an object depends not just on its mass but also on the acceleration it experiences due to gravity. Thus, this difference in acceleration exists at poles and equator.
Pre-Requisites:
Introduction to Gravity, Universal Law of Gravity, Free Fall, Forces, Laws and equations of motion
Activity:
Calculate the value of g and compare it with the value obtained from the experiment in the previous sub-topic
Real Life Question:
Weight of an object is different at the pole and equator. Can you explain why?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Universal Law of Gravity | Gravitational force is proportional to the product of the masses of 2 bodies concerned and inversely proportional to the square of distance between them. |
| Newton’s 2nd law | Force is equal to rate of change of momentum |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|
Real life uses :
Calculating the value of helps us analyze the motion of objects falling down, the motion of celestial bodies etc can be explained accurately and precisely by knowing these values.
Practical examples around us
| Examples | Explainations |
|---|---|
| The force of gravity between the Earth and Sun, Sun and other stars can be calculated by knowing the value of G | The universal Gravitation constant is universal in the sense that it is applicable to any 2 bodies in the universe |
What you learn in Practice:
*The derivation of the formula and how it came about. (An example to explain this)