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A wooden ball of volume $V = 100$ cm³ and density $\rho = 600$ kg/m³ is held by a thread tied to the bottom of a vessel of water. The ball is completely submerged (see the figure). The density of water is $\rho_w = 1000$ kg/m³. Find the tension in the thread. Take $g = 10$ m/s².
A wooden block of volume $V = 0.002$ m³ and density $\rho = 600$ kg/m³ floats in water. Find the volume of the submerged part of the block. The density of water is $\rho_{\text{water}} = 1000$ kg/m³.
Find the pressure produced by a mercury column of height $h = 76$ cm. The density of mercury is $\rho = 13600$ kg/m³, $g = 10$ m/s².
Find the buoyant force acting on a steel ball of volume $V = 0.001$ m³ that is fully submerged in water. The density of water is $\rho = 1000$ kg/m³, $g = 10$ m/s².