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Q. 7

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 383

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Short Answer

Blocks a, b, and c in FIGURE Q14.7 have the same volume. Rank in order, from largest to smallest, the sizes of the buoyant forces Fa , Fb , and Fc on a, b, and c. Explain.

Buoyant forces are equal on all three blocks, so Fa = Fb = Fc

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Step by Step Solution

Step 1 : Given information

The figure given with 3 objects with same volume is submerged in liquid.

Step 2 : Explanation

We know that buoyant force acting on a mass floating in a liquid depends on density of object, submerged volume of object and gravity.

F= Vs ρ g ……..................(1)


F = buoyant force

Vs = submerged volume

ρ = density of liquid

g = gravity

As the volume of all objects are same so buoyant force will be same .


Fa = Fb =Fc

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