Gravitation

Introduction

In physics lesson we are faced with a very interesting theme- Gravitation. We all know that law of gravity introduced Isaac Newton. By this Law, Newton proved that the Earth object and movement of the heavenly bodies are affected by the same laws of nature. If we want to understand the gravity we must understand the relationships between human and the Earth forces of attraction and understand how to use the gravitational formula. In the video it is easy to follow and understand this theme better. So we will use this video to learn better the theme about Gravitation. I hope that everything goes well, video is long, but it covers important information that will be required after watching this video! 

Video link-

https://www.youtube.com/watch?v=Xcel427Ezl0&t=215s

 

Task

Watch the video about Gravitation and then answer the questions! 

Process

Answer to these questions:

  1. Which scientist thought about why apple fall?
  2. Why Isaac Newton was interested in apple falling?
  3. How he called this phenomenon?
  4. What is marked with F?
  5. What is marked with big G?
  6. How looks formula of Gravitation?
  7. Why computer don't falls in our face when we are using it?
  8. How big is Gravitation constant?
  9. What is little r in formula?
  10. How big is little g? 

Evaluation

Question answers:

  1. Isaac Newton;
  2. Because he was thinking out of the box and he was thinking why everything falls to the ground, but nothing happens differently;
  3. Gravity;
  4. Force;
  5. Gravitation constant;
  6. F=G* m1*m2/ (r)2
  7. Because number of G is very small;
  8. G= 6,6720* 10-11 N*m2/ kg2
  9. Distance between two objects;
  10. g=9,8 m/s2

Conclusion

Congratilations! Now you have mastered the theme of Gravitation! You're mastered the basics things of Gravitation law and understood the formula!

This material has helped you to know better Gravitation formula and the relationships between human and the Earth forces of attraction. 

For a better understanding of this and other themes, it is advisable to look throught E. Šiltera, V. Reguta, A. Cābeļa and I. Vilka physics book for class 12,as well as various internet sites such as uzdevumi.lv.

Credits

Information and video was taken from www.youtube.com. This material has been authorized and even recommended to use the classroom to complement the students' knowledge and awareness, as well as independent thinking. It shows that physics can be fun by drawing various examples, so you can easier understand the theory.