profile-img
Debanjana Adhikari posted an Question
May 23, 2020 • 23:32 pm 30 points
  • CSIR NET
  • Physical Sciences

Q19. the relativistic form of newton's second law of motion is (a) f=- b) f=vc*-y? dv vc-v dt dt mc (c) f2 (d) f=m -ydv c dt c-v dt

Q19. The relativistic form of Newton's second law of motion is (a) F=- b) F=vc*-y? dv Vc-v dt dt mc (c) F2 (d) F=m -ydv c dt C-v dt

2 Answer(s) Answer Now
  • 1 Likes
  • 6 Comments
  • 0 Shares
  • comment-profile-img>
    Ruby negi best-answer

    option c is correct... remember there is difference between rest Mass and relativistic mass.. in relativity, f=ma violates...

    cropped-598917482.jpg
    eduncle-logo-app

    when it is not clearly mention that m is relativistic mass always try to take m relativistic mass and mo rest Mass...

  • comment-profile-img>
    Chandra prakash

    see attached file

    cropped-1953285768.jpg
    eduncle-logo-app

    see full calculation.. I hope it's helpful for you

    eduncle-logo-app

    no correct answer given in options... see attached file it's correct ans

  • comment-profile-img>
    Abhishek singh best-answer

    I have derived the formula for you. I used formula of relativistic momentum and derived it with respect to time. Best regards.

    cropped3790185330486771612.jpg
    eduncle-logo-app

    you got stuck in differentiation. do it again by yourself. I have used quotient formula for differentiation.

    eduncle-logo-app

    my next comment, I have further simplified the expression. And Option C comes out to be correct.

  • comment-profile-img>
    Dhairya sharma

    this will also help you. because newtons second law is rate of change of momentum. and in momentum due to relativity we multiply by gamma factor. so the output that comes i attached already.

    cropped4649503448116000849.jpg
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