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: Finding unknown mass with tension

  1. Nov 6, 2007 #1
    1. The problem statement, all variables and given/known data

    so my teacher assigned me a to find the mass of this key without a scale using strings at whatnot.


    2. Relevant equations



    3. The attempt at a solution
    i tried setting up the system like this:

    ____ceiling_____
    \ /
    \/
    O
    |
    [Key]

    and i cant seem to find it because i cant find tension.

    T2=mg and Ty=T1sinθ

    2T1y=T2
     
  2. jcsd
  3. Nov 6, 2007 #2

    hage567

    User Avatar
    Homework Helper

    What about the x components of the tensions? You need to find both the x and components for both strings. I'm assuming there is two strings there.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...