1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Tension in a massless string

  1. Sep 1, 2013 #1
    Why is tension in a massless string same throughout its length?
  2. jcsd
  3. Sep 1, 2013 #2
    Consider a massless string being pulled horizontally towards right.

    The forces acting on a tiny bit of the string having mass Δm will be T1 towards right and T2 towards left.The force equation will be T2-T1=Δma where 'a' is the acceleration of the tiny bit of the string .Now since Δm=0 ∴ T2=T1 i.e tension on either side of any arbitrary mass of the string is zero.In other words tension throughout the string is constant.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted