The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density ($$\rho $$) and rotating at ($$\omega $$) rad/s is
A. $$\rho {\omega ^2}{{\text{r}}^2}$$
B. $$2\rho {\omega ^2}{{\text{r}}^2}$$
C. $$\frac{{\rho {\omega ^2}{{\text{r}}^2}}}{2}$$
D. $$\frac{{\rho {\omega ^2}{{\text{r}}^2}}}{4}$$
Answer: Option C
This Question Belongs to Mechanical Engineering >> Hydraulics And Fluid Mechanics In ME
P = ρgH.
H = V^2 / 2g.
V = ω r.
P = (ρ*ω^2*r^2)/2.
P = ρgH.
H = V^2 / 2g.
V = ω r.
P = (ρ*ω^2*r^2)/2.
How I don't understand please explain it