Physics

Problem

70\,\text{kg}

diver stands on a flat steel plate resting on the lakebed at a depth of

8.0\,\text{m}

in freshwater. The clay beneath the plate can tolerate a maximum additional pressure of

1.2\times10^{5}\,\text{Pa}

(above the pressure already exerted by the water at that depth). What is the minimum area of the plate that prevents the clay from being overloaded? (Use

\rho_{\text{water}} = 1.0\times10^{3}\,\text{kg}\,\text{m}^{-3}

and

g = 9.8\,\text{m}\,\text{s}^{-2}

.) a)

1.6\times10^{-2}\,\text{m}^2

3.5\times10^{-3}\,\text{m}^2

5.7\times10^{-3}\,\text{m}^2

5.8\times10^{-4}\,\text{m}^2

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