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: Equation for torque

  1. Apr 11, 2005 #1


    User Avatar

    I have this problem with torque and not sure if I approached it correctly or not.

    A door is 1m wide and 2m high, has a mass of 20kg, and is supported by two hinges, each bearing 1/2 the weight of the door. The hinges are attached to the left of the door at locations 1/2m above the bottom edge and 1/2m below the top edge. It is in static equilbrium.

    So, I write out the two conditions:
    vector sum of net force= (Wdoor along -j)+(Fsupport1 along j)+(Fsupport2along j)=0
    vector sum of net torque= 0
    I'm stuck at this, I don't know if I wrote the equation right or not. Please help. I don't know where to put the pivot point in this example either. Is the direction for the forces right? Please help.
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted