Like terminal velocity of an object falling in the air, is there the same said type terminal velocity for objects sinking in water? If so, how deep would an object have to be sinking in order to reach the speed? Does the weight of the object in water affect the speed as well?
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The simplest approach would be using Stokes law for settling velocity. This equation will tell you how fast a sphere with a certain radius and density will sink in a fluid which has it’s own density and viscosity.
V=2/9(gr2)(d1-d2)/µ
where
V = velocity of fall (cm/sec)
g = acceleration of gravity (cm/sec2)
r = “equivalent” radius of particle
d1 = density of particle (g/cm3)
d2 = density of medium (g/cm3)
µ = viscosity of medium (g/cm-sec)
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