profile-img
Sayan Pal posted an Question
August 02, 2021 • 22:52 pm 30 points
  • IIT JAM
  • Physics (PH)

Please answer

A man places a chain of mass m and length I on a table slowly. Initially the lower end of the chain just touches the table. The man drops the chain when half of the chain is in vertical position. The work done by man in this process is -mg 4 -3mgl O 8 O -mg 3 O mgl

2 Answer(s) Answer Now
  • 0 Likes
  • 3 Comments
  • 0 Shares
  • comment-profile-img>
    Sayan pal

    ok almost clear ..why you used minus sign in the 2nd case?

    eduncle-logo-app

    We have to derive the difference in potential energy ,tai na...So difference will be there...So minus... :)

  • comment-profile-img>
    Bidyut sinha best-answer

    ok I am clarifying the case..when the chain is in intial position and touches the table, then I have taken L/2 length ...because in case of chain problem, when it is in the vertical Position initially, then you have to take L/2 height...And so mg L/2...And After that when half of the length is in table, then I have taken half of length of L/2, that is L/4...In this case mass is also half..m/2 so m/2 gL/4...

  • comment-profile-img>
    Bidyut sinha Best Answer

    I have given detail calculation in the attached picture.

    cropped244630217.jpg
    eduncle-logo-app

    how L/4 comes? not clear to me

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