Buoyant Force and Archimedes\' Principle 8. Which is the correct statement? Mark

Question

Buoyant Force and Archimedes' Principle 8. Which is the correct statement? Mark all correct statements. (a) The buoyant force on a fish is approximately the same as the weight of the fish. (b) As you dive deep into the ocean, the buoyant force on you decreases. (c) When an object is submerged in water (or any liquid) the only force acting on the object is buoyant force (d) Buoyant force acts only when an object floats (e) Archimedes' principle says buoyant force is equal to the weight of the object when it is submerged in water Archimedes Principle states, "The amount of buoyant force that will act on a completely immersed object is numerically equal to 9. (a) the weight of the object. (b) the weight of fluid displaced by the object." (c) both A and B. (d) none of these. 10. A baseball is submerged in a large beaker filled with water. (a) Which position does the baseball experience the greatest pressure? A?, B? or C? (b) which position does the baseball experience the greatest buoyant force? A?, B? or C? 11. If you have a ship loaded with a cargo of Styrofoam will the ship float higher, lower or the same level as the empty ship? Explain why 12. If you put a piece of iron cylinder in the water it but if you put a piece of wooden cylinder of about the same size it floats. Which one gets more buoyant force? The iron? Or wooden cylinder? (a) Iron (b) Wooden cylinder (c) Both iron and wooden cylinder gets the same buoyant force. (d) There is not enough information to answer. 14-3

Explanation / Answer

8. (a) as fish is floating that means  
Fnet = Fb - W = 0

Fb = W

9. Buoyant force = V_submerged rho_fluid g

Ans(b) the weight og fluid displaced by the object.

10. as we go down the fluid, pressure increases.

(A) Greatest pressure - at C

(b) buoyant force is equal to the weight of waterdispalced,

that is same for all three.

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