question_answer

A spherical ball of radius\[1\times {{10}^{-4}}m\] and density to \[{{10}^{4}}\]\[kg/{{m}^{3}}\]falls freely under gravity through a distance h before entering a tank of water. If after entering the water the velocity of the ball does not change, find h. The viscosity of water is\[9.8\times {{10}^{-6}}N-s/{{m}^{2}}\]. (in m)

Answer:

20.40