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A raft is constructed of wood having a density of 6.00x102 kg/m3. Its surface area is...

A raft is constructed of wood having a density of 6.00x102 kg/m3. Its surface area is 5.70 m2 and its volume is 0.80 m3. When the raft is placed in fresh water, to what depth h is the raft submerged by its weight? The density of fresh water is 1000 kg/m3.

Hint: Use Newton’s second to sum the forces (Buoyancy and weight) that are in equilibrium.

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Homework Answers

Answer #1

Buoyant force is equal to weight of displaced water. Buoyant force also balances the weight of the wood. We use this condition to find the required depth as shown below


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