PTB 9th Class Physics Chapter 4 Solved Questions and Numericals Problems

View and Download the solved questions, solved numerical problems or 9th Class Physics notes of Chapter 4 “Turning Effect of Forces” of Punjab Textbook Board. These 9th class physics notes of 4th Chapter are according to the new syllabus (2013) of Punjab Boards including Lahore Board, Gujranwala Board, Sahiwal Board, Rawalpindi Board, Faisalabad Board, Multan Board, Bahawalpur Board, Federal Board, DG Khan Board and Sargodha Board. Students of 9th Class of all these board can facilitate from the physics notes given below. You can also download 9th Class Physics Chapter 4 Solved Questions and Numericals Problems.

Unit 4: Turning Effect of Forces

By studying this chapter students will be able to: Define like and unlike parallel forces. State head to tail rule of vector addition of forces/vectors. Describe how a force is resolved into its perpendicular components. Determine the magnitude and direction of a force from its perpendicular components. Define moment of force or torque as moment = force x perpendicular distance from pivot to the line of action of force. Explain the turning effect of force by relating it to everyday life. State the principle of moments. Define the centre of mass and centre of gravity of a body. Define couple as a pair of forces tending to produce rotation. Prove that the couple has the same moments about all points. Define equilibrium and classify its types by quoting examples from everyday life. State the two conditions ‘ for equilibrium of a body. Solve problems on simple balance systems when bodies are supported by one pivot only. Describe the states of equilibrium and classify them with common examples. Explain effect of position of the centre of mass on the stability of simple objects.

9th Class Physics Chapter 4 Short Question Answers

Keep patience and wait for the document to be loaded. The loading time will depend on your internet connection speed.

 

To Download 9th Class Physics Unit/Chapter 4 Short question answers Click alt

9th Class Physics Chapter 4 Solved Numericals

Keep patience and wait for the document to be loaded. The loading time will depend on your internet connection speed.

To Download 9th Class Physics Unit/Chapter 4 solved numericals Click alt

 

Click 9th Class Physics Notes for other chapter’s notes

These solved numerical problems and question answer are explain properly and we hope that students will not find any difficult or confusion in these notes. But if students have any type of question or query regarding 9th Class Physics Notes, Solved Question Answers and Solved Numerical problems, then they can ask us by commenting below in the comment section.

Don’t forget to share these valuable notes of 9th Class Physics Chapter 4 Notes with your friends and class fellows; you can share this helping material by clicking the sharing buttons given below.

34 Comments

  1. SHEIKH MUHAMMAD HUZAIFA ARSHAD said:

    Very helpfull
    THANX

    March 6, 2018
    Reply
  2. Maira usman said:

    Can you please upload chemistry 9 class solved questions and review excercises and numericals

    August 27, 2017
    Reply
  3. Asad said:

    These notes are really helpful for me because I am from a village and I don’t have the facility to join any academy……I this situation the notes are best.

    August 24, 2017
    Reply
  4. Baqar said:

    Very helpfull
    Thanks

    May 16, 2017
    Reply
  5. damiamalik said:

    Explain numerical 4.10

    May 7, 2017
    Reply
  6. khaula said:

    How is r2 50N in 4.10

    March 5, 2016
    Reply
  7. hajat abbas said:

    dear sir. I need physics past papers of fbise

    March 3, 2016
    Reply
  8. saba said:

    i need answer ofmini exercise and quick quiz

    November 11, 2015
    Reply
    • laiba khurram said:

      What are your questions? I have done all the exercises. Tell me please maybe I can help.

      February 8, 2016
      Reply
  9. Huzaifa said:

    Sir please give me solved numericals of chapter 4 sindh board

    October 30, 2015
    Reply
  10. Arfa said:

    I think mcq part 5 answer is wrong its not d its c??

    October 4, 2015
    Reply
    • laiba khurram said:

      numerical 4.5 answer in finding force is correct but the method is wrong.
      the correct one is:
      Fx= FCos(thita)
      F= Fx divided by Cos(thita)
      F= 20 divided by Cos(thita)
      F= 20 divided by 0.866
      F= 23.1N

      February 8, 2016
      Reply
      • Haseeb Hassan said:

        Thanks I was having problem in that.

        January 10, 2019
        Reply
  11. Shamir said:

    plzzzz i need chaoter no 4 turning effect of force quetions answers

    September 21, 2015
    Reply
  12. Humna said:

    plzzzz i need ch4 mini ex answers

    February 12, 2015
    Reply
  13. zoha khan said:

    sir i have a question plz….what are vactors

    February 5, 2015
    Reply
    • admin said:

      Vectors are the quantities which have magnitude and direction as well.

      February 13, 2015
      Reply
  14. bilalasif said:

    Hello Sir!I Need Chapter No #6 “Work And Energy” All Questions Answer And Numerical problems For My Mid Term Exam

    July 23, 2014
    Reply
  15. sajjad said:

    please upload notes of chapter 6,7 and 8……
    hurry up ………….

    June 10, 2014
    Reply
    • abdullah said:

      please upload in urdu because our syllabus in urdu

      June 10, 2014
      Reply
  16. Rimsha Ubaid said:

    what about chapter 8’s numericals ? i really need them !

    April 6, 2014
    Reply
  17. sarmad said:

    nice i like that

    January 29, 2014
    Reply
  18. styloofairy said:

    also give answers of quick quiz and mini exercises ; if possible …………

    January 18, 2014
    Reply
    • rbia said:

      very good i like that
      please upload please sir………………

      June 10, 2014
      Reply
  19. sajid kazmi said:

    really good one

    December 29, 2013
    Reply
  20. bisma said:

    wow they are great

    October 19, 2013
    Reply
  21. bisma said:

    plz give the notes of 7 chapter

    October 19, 2013
    Reply
    • M.ADNAN JUTT said:

      I like it plz gives the all chapters numericals of physics

      July 7, 2014
      Reply
    • M.ADNAN JUTT said:

      nice work

      July 7, 2014
      Reply
  22. Waleed said:

    Love It

    October 4, 2013
    Reply
  23. Danish said:

    very nice notes

    September 30, 2013
    Reply
  24. summia said:

    really nice

    September 30, 2013
    Reply
  25. awais said:

    numericals of chapter 3rd and 4th

    July 1, 2013
    Reply
  26. ali said:

    realy nice one

    May 1, 2013
    Reply

Leave a Reply

Your email address will not be published. Required fields are marked *