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!

Two masses hanging from a disk

  1. Apr 21, 2010 #1
    1. The problem statement, all variables and given/known data

    A circular disk has two masses acting on it, m1=10g, m2=50g. The forces caused by these masses are 4.5cm (F1) and 6.8cm (F2) away from the axis of rotation (center). The angles are 130 degrees (F1, and on outer side away from center) and 98 degrees (F2, also on outer edge away from center). Calculate F1 and F2. Which way will the disk rotate?

    2. Relevant equations

    T=rFsin(phi)

    3. The attempt at a solution

    I wasn't even really sure where to start with this one. Don't know if I'm missing some info or what.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Apr 21, 2010 #2
    Start by calculating the two forces using gravity (mg). Then find torque from these forces.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Two masses hanging from a disk
  1. Two Hanging masses (Replies: 5)

Loading...