The selections by the way are
a. 58.86 kNewton
b. 53.22 kNewton
c. 62.64 kNewton
d. 66.27 kNewton
Got no idea how to solve this problem. All I know is that it's related to differential calculus and most definitely use vectors.
Find the force on one face of a right triangle of sides 4 meters and altitude of 3 meters. The altitude is submerged vertically with the 4 meter side in the surface.
Can anyone show me how ?
Pressure of water at depth h is:
.
Where is the density of water, and g the acceleration due to gravity.
Total force on triangle is then
Where dw is along the width of the triangle.
I get about 58.8 kN.