The velocity of water in a river is 18 km/hr near the surface . If the river is 5 m deep , find the shearing stress between the horizontal layers of water.The co - efficient of viscosity of water = $\;10^{-2}\;$ poise .

Question

$(a)\;10^{-1}\;N/m^{2}\qquad(b)\;10^{-2}\;N/m^{2}\qquad(c)\;10^{-3}\;N/m^{2}\qquad(d)\;10^{-4}\;N/m^{2}$