Example $1$: Water enters a $6m$ wide rectangular open channel with a depth of $0\mathrm{.}45m$ and levaes

it with a depth of $2\mathrm{.}5m.$ The discharge of flow is given as $24\frac{m^3}{sec}.$

a$)$ Compute Froude number at sections $1$ and $2.$

b$)$ Draw specific energy and specific force curves.