Ram Prasath posted an Question
August 19, 2021 • 21:09 pm 30 points
  • IIT JAM
  • Physics (PH)

Friends please explain this answer and also explain the questions that are attached with it?

1 Answer(s) Answer Now
  • 0 Likes
  • 6 Comments
  • 0 Shares
  • comment-profile-img>
    Bidyut sinha

    yes, that is impulse...But Impulse is equal to torque× time interval...then per unit time interval ,that is equal to change in angular Momentum...Check the attached picture.

    cropped842139829.jpg
  • comment-profile-img>
    Bidyut sinha Best Answer

    please check the attached picture.

    cropped1901304668.jpg
    eduncle-logo-app

    in the last step how do u calculate the value of v?

  • comment-profile-img>
    Bidyut sinha

    In the 7 th Question, it's asking to obtain the velocity .Now I have applied simple time dilation and length contraction formula .But before that I have written a formula (that in general Formula we write in Physics) that V=L/t...I have taken this concept because from that I will get proper length and time...Then in the formula of time dilation and length contraction, I have used them... Because proper length Value is given...so from that equation I have obtained Velocity...

  • comment-profile-img>
    Bidyut sinha

    please check the attached picture.

    cropped756183149.jpg
    cropped836207591.jpg
    cropped90724087.jpg
    cropped794161355.jpg
    cropped1101258437.jpg
    eduncle-logo-app

    i don't understand the 7th question. could u explain that problem please?

    eduncle-logo-app

    In the 7 th Question, it's asking to obtain the velocity .Now I have applied simple time dilation and length contraction formula .But before that I have written a formula (that in general Formula we write in Physics) that V=L/t...I have taken this concept because from that I will get proper length and time...Then in the formula of time dilation and length contraction, I have used them... Because proper length Value is given...so from that equation I have obtained Velocity...

    eduncle-logo-app

    really thank you for ur answer, but could u derive it once more. i think it would be easy to understand the problem.

    eduncle-logo-app

    Sure... wait please

    eduncle-logo-app

    also in the 9th question u have said j=r×p.

    eduncle-logo-app

    yeah... telling... wait... first let me tell ur first doubt in copy... after that I will tell...

    eduncle-logo-app

    please check the attached picture

    eduncle-logo-app

    yes, that is impulse...But Impulse is equal to torque× time interval...then per unit time interval ,that is equal to change in angular Momentum...Check the attached picture.

    eduncle-logo-app

    in that 9th question , i don't understand the method 2 . could u please make it clear

    eduncle-logo-app

    ok let me check... which u r telling... please wait

    eduncle-logo-app

    it's Just Vector cross multiplication and component break method..@Ram :)

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers