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: This one is hard

  1. Apr 22, 2004 #1
    Four particles, each of mass 0.200kg, are placed at the vertices of a square with sides of length 0.500m. The particles are connected by rods of negligible masses. This rigid body can rotate in a vertical plane about a horizontal axis that passes through one of the particles (A for example, as shown in figure attached.)
    (a) What is the rotational inertia I of the body about axis A?
    (b) What is the net torque Tnet about axis A (due to the gravitational forces), when the rod AB is horizontal?
    (c) What is the angular acceleration a of the body at the instant rod AB is horizontal?

    Attached Files:

  2. jcsd
  3. Apr 23, 2004 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Others have said it in your other threads, but you must show what you've tried, Clutch.

    Homework Help Rules
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook