We are bound to earth by Gravity

The apple falls towards the earth due to gravity. We do not float in air because of gravity


Revolving of Planets around the sun

All the planets Revolve around sun in almost circular orbit

A force called centripetal force is required to make object move in circular orbit

This centripetal force is because of gravitational force of sun on earth


Revolving of Moon around Earth

Moon Revolves around earth in almost circular orbit

A force called centripetal force is required to make object move in circular orbit

This centripetal force is because of gravitational force of earth on moon

 

Formation of Tides in Sea

The rise and fall of sea is called tides

It appears twice a day

This is because of gravitational force of moon on water on earth

 

Questions

NCERT Question 7 - What is the importance of universal law of gravitation?

View Answer

  1. Class 9
  2. Chapter 10 Class 9 - Gravitation

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.