Cliff
Thank you for your response. What about closing versus opening? and does side versus top of door make a difference (in the location of the pulleys)?
The door opens horizontally. It separates a stock room from a shop. It is several hundred pounds, about 8 feet wide, and slides on wheels on top of the door. Right now we have a rope and weight on the side of the door to make it easier to open and close (employees don't want to shut it due to...
Im just asking a simple physics question (well not that simple since I am asking) about what type of system would give the best mechanical advantage in both ease of opening and closing.