I know what the formula for the Volume of a cylinder is. If I had say a 25lbs weight and dropped it from the top into the cylinder and lost no air , where would it stop(in inches from the bottom of the cylinder)? Not carrying about temp of the air or moisture. Is their a some what simple formula? I tried to find one on the internet. I would settle for the simplest formula even if it is difficult. Thank you for any help in advance.