Question

A 10cm   inside diameter pipe carries a water flowing at  10 m/s.  Find its mass flow rate in kg/s  taking water density as   1 000  kg / cu m

Answer 1

$A=\pi d^2/4=3.14\cdot0.1^2/4=0.00785\ (m^2)$

$Q=\rho Av=1000\cdot0.00785\cdot10=78.5\ (kg/s)$ . Answer