I am trying to figure out the force required for a gas spring to open a load; in this case a glass plate framed in metal square tubing. It boils down to a equation I can't seem to figure out. Although I did find an example of someone trying to figure out the force needed for a truck cover to open and stay open at https://www.physicsforums.com/archive/t-11487_Torque,_Force,_and_a_truck_cover....html [Broken] But it was all greek to me (no pun intended). My scenario is very similar. But I just don't have the knowledge to figure it out! Can anybody help?