MCQ
A vertical triangular plate $ABC$ is placed inside water with side $BC$ parallel to water surface as shown. The force on one surface of plate by water is (density of water is $\rho $ and atmospheric pressure $P_0$ )
- A$\left( {{P_0} + h\rho g} \right)\frac{1}{2}ab$
- ✓$\left( {{P_0} + h\rho g} \right)\frac{1}{2}ab + \frac{{{a^2}b}}{3}\rho g$
- C$\left[ {{P_0} + \rho g\left( {h + a} \right)} \right]\frac{1}{2}ab$
- D$0$
