Question

The tank in the picture has the shape of an ellipse with H-B axes, L in length. The tank is filled with ethylene glycol. The tank is moving 2% downhill at a speed of 80 km / h. If the tank stops in 5 s when braking, calculate the max fluid pressure. H=1.8 m, B=2.6 m, L=9.2 m  https://imgur.com/a/g71udUx

Answer 1

$v= u+at\\ u = 80km/hr = 22.22m/s\\ v = 0m/s\\ t = 5s\\ 0 = 22.22+5t\\ a = \frac{22.22}{5} = 4.44m/s²$

$\begin{aligned}P &=\rho(hg +al)\\ &=1110(1.8×9.6 + 4.44×9.2)\\ &=64522Pa\\ &= 64.5kPa \end{aligned}$