A Vertical Plate Is Submerged in Water (The Surface of the Water

Multiple Choice

A vertical plate is submerged in water (the surface of the water coincides with the $x$ -axis) . Find the force exerted by the water on the plate. (The weight density of water is $62.4 \mathrm { lb } / \mathrm { ft } ^ { 3 }$ .)

A) $624 \mathrm { lb }$
B) $62 \mathrm { lb }$
C) $125 \mathrm { lb }$
D) $312 \mathrm { lb }$