   Chapter 9, Problem 77AP

Chapter
Section
Textbook Problem

An iron block of volume 0.20 m5 is suspended from a spring scale and immersed in a flask of water. Then the iron block is removed, and an aluminum block of the same volume replaces it. (a) In which case is the buoyant force the greatest, for the iron block or the aluminum block? (b) In which case does the spring scale read the largest value? (c) Use the known densities of these materials to calculate the quantities requested in parts (a) and (b). Are your calculations consistent with your previous answers to parts (a) and (b)?

(a)

To determine
Whether the buoyant force is greater in iron block or in the aluminum block.

Explanation

Buoyancy or up thrust, is that when a weight is immersed in the water, due to the increase of pressure at the bottom, some amount fluid will flow off outside and this is  the fluid is opposing the weight of the object. This upward force exerted by the fluid is called the buoyant force.

Iron block and aluminum block both are inserted in the water...

(b)

To determine
Whether in the spring scale either the iron block or in the aluminum block will have large values.

(c)

To determine
The buoyant force and the tension exerted by the iron and aluminum blocks.

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