The experimental diving bell shown above is lowered at theocean’s surface and re

Question

The experimental diving bell shown above is lowered at theocean’s surface and reaches a maximum depth of 80m. Initially it accelerates downward at a rate of 0.10m/s2 until it reaches a speed of 2.0 m/s, which thenremains constant. During the descent, the pressure inside thebell remains constant at 1 atmosphere. The top of the bell hasa cross-sectional area A = 9.0 m2. The density ofseawater is 1025 kg/m3. Calculate the total timeit takes the bell to reach the maximum depth of 80 m. Calculate the weight of the water on the top of the bell when itreaches the maximum depth. Calculate the absolute pressure onthe top of the bell at the maximum depth. On the top of thebell there is a circular hatch of radius r = 0.25 m. Calculate the minimum force necessary to lift open the hatch of thebell at the maximum depth. What could you do reduce the forcenecessary to open the hatch at this depth. Justify youranswer.

Explanation / Answer

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