Find the force supplied by the stop to keep the gate closed. The rectangular gate is $2\mathrm{.}0$ m long and $1\mathrm{.}7$ m wide $($normal to the paper$).$ The height $h_1=2\mathrm{.}1m$ and $=35.$ Neglect the weight of the gate. $[10]$

Hint: Make sure you take moments at the hinge point. The 'stop' exerts a force normal to the plate towards the water. The net force due to water is normal to the plate.