I need to design a pivot arm which is pulled up by a float (buoyancy force). In the upper positions of the lever arm, there's a mass trying to pull down. The reason that I'm presenting this problem is to consider all the variables (most significant) in order to build a low-cost prototype.
The variables that I consider are: 1.- Volume of the float, the material is polypropylene. I need a low density but high volume float in order to generate more buoyancy force, is that correct? 2.- The distance between the force applied and the pivot "d1". If I generate more torque, more will be the force generated by the buoyancy, right? 3.- The angle of the arm A.
This is my first attempt presenting this problem, so any suggestion will work. The goal is to achieve a bigger force than the 95 N generates by the "object x" in order to reach the 'sealed position' denoted by "d2".