The experimental diving bell shown above is lowered from rest at the ocean’ s surface and reaches a maximum depth of 80 m. Initially it accelerates downward at a rate of 0.10 m/sec^{2} until it reaches a speed of 2.0 m/s, which then remains constant. During the descent, the pressure inside the bell remains constant at 1 atmosphere. The top of the bell has a cross-sectional area A = 9.0 m^{2}. The density of seawater is 1025 kg/m^{3}. |