M2.2 Cat A Buoyancy and Fluids

A 13 N object is placed in a container of fluid. If the fluid exerts a 60 N buoyant (upward) force on the object, will the object float or sink?

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The rock weighs 2.25 N when suspended in air. In water it appears to weigh only 1.8 N. Why?

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A 4.5 N object is placed in a tank of water. If the water exerts a force of 4 N on the object, will the object sink or float?

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A swimmer is floating on his back on the sea surface. If his density is 900 kg/m³ and he has a volume of 0.05 m³. What is the buoyant force that supports him in the sea water of density 1025 kg/m³?

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A piece of metal weighs 800 N in the air and 500 N in the water. a. Find the buoyancy force b. Find the volume of the metal c. Find the density of the metal

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A block of gold and a block of wood both have the same volume. If they are both submerged in water, which has the higher buoyant force?

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A ship of mass 1200 kg floats in sea water. What volume of sea water does it displace? If the ship enters fresh water, what weight of cargo must be unloaded so that the same volume of water is displaced?

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