Question
Concrete is pumped from a cement mixer to the place it is being laid, instead of being carried in wheelbarrows. The flow rate is 200.0 L/min through a 50.0-m-long, 8.00-cm-diameter hose, and the pressure at the pump is $8.00 \times 10^6 \textrm{ Pa}$ . Verify that the flow of concrete is laminar taking concrete's viscosity to be $48.0 \textrm{ N/m}^2\cdot\textrm{s}$, and given its density is $2300 \textrm{ kg/m}^3$.

$N_R = 2.54 < 2000$. The flow is laminar.

Solution Video