A 25% solids concentrated suspension contains particles of approximate spherical shape of an insoluble food powder. The mean size of the particles is 50 m and their density is 2002 kg/m3. Calculate the settling velocity of such particles in water at room temperature. Density and viscosity of water is given as 1000kg/m3 and 0.001 kg/m sec respectively. (Take g = 9.81 m/sec2)