A 5-gal, cylindrical open container with a bottom area of 120 in. \(^{2}\) is filled with glycerin and rests on the floor of an elevator.

(a) Determine the fluid pressure at the bottom of the container when the elevator has an upward acceleration of \(3 \mathrm{ft} / \mathrm{s}^{2}\).

(b) What resultant force does the container exert on the floor of the elevator during this acceleration? The weight of the container is negligible. (Note: \(1 \mathrm{gal}=231 \mathrm{in}^{3}{ }^{3}\) )