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 Angular Acceleration of a spool.

  1. Nov 2, 2007 #1
    1. The problem statement, all variables and given/known data
    A solid cylinder of 24 cm radius is postioned on a frictionless plane inclined at 30 degrees above horizontal. A force F is exerted by a string wrapped around the spool. When F has a certain critical value the center of mass of the spool does not move. When this is the case, what is the angular acceleration of the spool?

    2. Relevant equations
    Torque equals radius times Force times sin theta. Also angular acceleration times I.

    3. The attempt at a solution
    I don't have the force but I do have a radius and the angle.
  2. jcsd
  3. Nov 2, 2007 #2
    Does this have something to do with the center of mass?
  4. Nov 2, 2007 #3
    I mean like a number for the center of mass or something?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook