Q$3.$ a$)$

b$)$

The manometer fluid in the manometer has a SG of $3\mathrm{.}46.$ Pipes A and B contain $H_{2}O.$ If the pressure in pipe $A$ is decreased by $1\mathrm{.}3$ bar and pressure in pipe B increases by $0\mathrm{.}9$ bar determine the new differential reading of the manometer. $($Density of water $({}_{\text{w}\text{a}\text{t}\text{e}\text{r}})=1000k\frac{g}{m^3},\frac{1}{b}ar={10}^{5}Pa)$

What is the mass of the body $m$ with crosssectional area $A=0\mathrm{.}01m^2$ for the pressure at point $C$ to be $3$ bar?