force and pressure -post 2

Dear Learners,
Thank you for logging in! You're wonderful!😊 

Happy Learning!😊

This is our second class for this chapter. At the end of it, you will be able to:
1. Estimate various units of forces.
2. Define the Resultant force.
3. Explain the different cases of the Resultant force.

Units of Force:

  • SI (International System of Units) unit is the newton (N).
  • other units are kgf (kilogram force) gf ( gram force).
  • 1kgf=1000gf
  • 1kgf=9.8N
https://youtu.be/OKC_g3obGTo (( Check this video on SI units) (Optional)

Resultant Force:

The single force which acts on a body to produce the same effect in it as done by all the forces collectively is called the resultant force.



Case 1: When two forces act along the same line in the same direction.



Case 2: When two forces act along the same line but in the opposite direction.



Case 3: When two equal forces act along the same line but in the opposite direction.




In case 3 resultant force will be 0.



Assignment:

  • Read from pg. 174-177 of the textbook

See you for the next class😊

Stay Happy! Stay Fantastic!


Comments

  1. Ojas punjApril 16, 2020 at 10:35 AM

    Good morning ma'am. I'm Ojas Punj

    ReplyDelete
  2. Aron haokipApril 16, 2020 at 10:40 AM

    Good morning ma'am

    ReplyDelete
  3. AnasApril 16, 2020 at 10:46 AM

    Good morning maam. .. I m anas ahmad

    ReplyDelete
  4. Ronald Jo JosephApril 16, 2020 at 10:47 AM

    Good morning Ma’am. I am Ronald Jo Joseph

    ReplyDelete
  5. AnonymousApril 16, 2020 at 10:49 AM

    Good morning mam I am kartik of class 8-D

    ReplyDelete
  6. SudhirApril 16, 2020 at 10:49 AM

    Good morning ma'am I'm akshat Rauthan class 8D

    ReplyDelete
  7. Achyut TripathiApril 16, 2020 at 10:53 AM

    Good morning Ma'am I am Achyut Tripathi of class 8 D

    ReplyDelete
  8. Jacob TombingApril 16, 2020 at 10:55 AM

    Good morning ma'am, Jacob here.

    ReplyDelete
  9. Gurdev SinghApril 16, 2020 at 11:01 AM

    Good morning ma'am, I am Gurdev Singh class 8-D

    ReplyDelete
  10. Varun negiApril 16, 2020 at 11:10 AM

    Good morning Ma'am I am Varun negi

    ReplyDelete
  11. Arpit Jonathan PillayApril 16, 2020 at 11:18 AM

    GOOD MORNING MAAM I AM ARPIT JONATHN PILLAY .

    ReplyDelete
  12. Akash DcostaApril 16, 2020 at 11:32 AM

    Good morning mam I am akash dcosta

    ReplyDelete
  13. Ojas SabherwalApril 16, 2020 at 11:49 AM

    Good morning ma'am I am Ojas Sabherwal..8D

    ReplyDelete
  14. PreetikaApril 16, 2020 at 11:56 AM

    GOOD AFTERNOON BOYS! WELCOME TO ANOTHER CLASS OF SCIENCE

    ReplyDelete
  15. Shaun DsouzaApril 16, 2020 at 11:59 AM

    Good morning, my name is Shaun Dsouza

    ReplyDelete
  16. UnknownApril 16, 2020 at 12:01 PM

    Good afternoon ma'am I am Alan Richard 8-D

    ReplyDelete
  17. DeependraApril 16, 2020 at 12:05 PM

    Good morning mam . This is DEEPENDRA KUMAR SINGH...8-D

    ReplyDelete
  18. ROHANApril 16, 2020 at 12:06 PM

    Good afternoon ma'am I am rohan bisht of class 8D

    ReplyDelete
  19. UnknownApril 16, 2020 at 12:07 PM

    Good afternoon maam I am Shaurya khatri

    ReplyDelete
  20. Janav jainApril 16, 2020 at 12:08 PM

    Good morning Ma’am
    Janav Jain

    ReplyDelete
  21. JonathanApril 16, 2020 at 12:14 PM

    Good afternoon mam. I am Jonathan.

    ReplyDelete
  22. Maanvik SoodApril 16, 2020 at 12:25 PM

    This comment has been removed by the author.

    ReplyDelete
  23. Maanvik SoodApril 16, 2020 at 12:26 PM

    Good morning ma'am this is Maanvik Sood

    ReplyDelete
  24. Riddhesh S. LodhiApril 16, 2020 at 12:44 PM

    Good afternoon ma'am I am Riddhesh S. Lodhi of class 8th D

    ReplyDelete
  25. AlenApril 16, 2020 at 1:45 PM

    Good morning ma'am. I'm ALEN SALVI.

    ReplyDelete
  26. Sahil JosephApril 16, 2020 at 4:00 PM

    Good morning mam I am aarush of class 8D

    ReplyDelete
  27. JoshApril 16, 2020 at 7:17 PM

    Hello mam my name is Joshua

    ReplyDelete
  28. JoshApril 16, 2020 at 7:18 PM

    Hello mam my name is Joshua

    ReplyDelete
  29. JoshApril 16, 2020 at 7:18 PM

    Hello mam my name is Joshua

    ReplyDelete
  30. Abhay Singh UpmanyuApril 17, 2020 at 9:10 AM

    Good morning ma'am I am ABHAY SINGH UPMANYU

    ReplyDelete

Post a Comment

Popular posts from this blog

lesson -cell structure n function ( POST 2)

Image
Good morning boys! In the last class we learnt that- . Cell is the basic structural and functional unit of life. .Depending on the number of cells , organisms can be grouped as unicellular or multicellular. . The size of a cell is related to its functions. LEARNING OUT COMES- By the end of this class you will be able to- .name the three basic parts of a cell and state their functions .distinguish between a eukaryotic and prokaryotic cell Today we are going to learn about CELL STRUCTURE .a A typical cell consists of three basic parts : 1 .  CELL MEMBRANE OR PLASMA MEMBRANE - . It forms the outer boundary of the cell, gives shape and size  to the cell. . It only allows certain selected substances to enter or leave the cell ( it is semi-permeable ). . It separates the cells from one another  and also from the surrounding medium. NOTE - In PLANT CELLS and BACTERIA there is an outer wall surrounding the cell membrane ,it is called the CELL WALL. It gives pr...
Read more

lesson- cell structure and functions (post -5)

GOOD MORNING BOYS!  WE HAVE COMPLETED THE LESSON- CELL STRUCTURES AND FUNCTIONS. -  Complete all the 12 questions-answers shared with you on your class group in your notebook.   DO the following objective questions in your notebook  13.  NAME THE UNICELLULAR ORGANISMS WITH HELP OF THE CLUES GIVEN:  a). Has false feet called pseudopodia.   ..amoeba................... b). Has hair -like structures called cilia.    ..paramecium......................... c). Is spindle -shaped.  ..Euglena...................... d). It causes fermentation in foods containing carbohydrates.   ....yeast.................. e). Is a slipper-shape aquatic animal.   ..paramecium................... f). An  unicellular aquatic animal with a flagellum.  ...Euglena.................... g). An  unicellular aquatic plant with a flagella    ..Chlamydomonas............................................ 14....
Read more

force and pressure - post 4

Image
"Always Question, Always Wonder "  Dear Learners, Thank you for logging in! You're wonderful!😊   At the end of this class, you will be able to: 1. Distinguish between Balanced and Unbalanced forces. 2. State the effects caused by force. Happy Learning!😊 Balanced and unbalanced Forces: https://youtu.be/-Rjid6hQuww  ( Check this video on Balanced and Unbalanced Forces) Effects of Force: Force acting on a body may cause the following effects on it: 1. A force acting on a body can change its state of motion or rest. 2. A force can the direction of motion of a moving object. 3. A force can change the shape and size of an object. 4. a force can stop a moving object. 5. A force can change the speed of a moving object. https://youtu.be/QuFh8GYDf7A?t=17  (check this video on effects of force) Drill: 1.       1. .   What will be the net force acting on a body if 2 forces of 50 N each...
Read more