What is the formula for finding gravitational force inside water ?
The gravitational force acting on an object is the same in air, or in water. However, in water the effect of gravity is partially counteracted by the object’s buoyancy, which is equal to the weight of the water it is displacing. For example, a cube of concrete with a volume of 1 cubic foot weighs 150 lbs. If you put this cube of concrete under water, gravity is still pulling down on the cube with a force of 150 lbs, but the water is pushing up on the cube with a force of 62.4 lbs. (1 cubic foot x 62.4 lbs/cubic foot) Therefore, the net force acting on the cube is 87.6 lbs. If you weigh the cube under water, the scale will say it weighs 87.6 lbs, but the gravitational force is still 150 lbs.
