1,037
edits
Changes
Jump to navigation
Jump to search
Line 68:
Line 68: + +
no edit summary
I noticed that when the ferrules are supposed to be clamped together I can still easily raise the top one. Yesterday I thought I had figured it out. I thought the downward pressure increased after the horizontal pressure was applied. I thought that might be why the top ferrule descended slowly. Today I am not sure because the top ferrule still goes up fairly easily after the horizontal pressure begins. It increases as it is moved higher, but when you first push it up it moves easily. That makes sense because moving the ferrule up means you compress the air above the piston and increase the downward force. I am not sure that the pressure is really 40 PSI when the ferrules are together. I don't have to push up with 40 pounds to move the ferrule up.
I noticed that when the ferrules are supposed to be clamped together I can still easily raise the top one. Yesterday I thought I had figured it out. I thought the downward pressure increased after the horizontal pressure was applied. I thought that might be why the top ferrule descended slowly. Today I am not sure because the top ferrule still goes up fairly easily after the horizontal pressure begins. It increases as it is moved higher, but when you first push it up it moves easily. That makes sense because moving the ferrule up means you compress the air above the piston and increase the downward force. I am not sure that the pressure is really 40 PSI when the ferrules are together. I don't have to push up with 40 pounds to move the ferrule up.
But force = pressure * area. If the area is small, the downward force would also be small even though it is 40 PSI. With an area of 1 square inch, there would be a force of 40 pounds. If it's 1/10 of a square inch, it would be only 4 pounds.