A metallic sphere of radius 1.0 × 10^−3 m and density 1.0×104 kg/m^3 enters a tank of water, after a free fall through a distance of h in the earth’s gravitational field. If its velocity remains unchanged after entering water, determine the value of h . Given: coefficient of viscosity of water = 1.0 × 10^−3 Ns/m^2 , g = 10 ms^−12 and density of water = 1.0×103 kg/m^3 .