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Mechanical Properties of Fluids
Question
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What is the fractional volume submerged of an ice cube in the pail of water placed in an enclosure which is falling freely under gravity?

Answer

A system is in a state of weightlessness, when the system is falling freely. So, weight of the ice cube as well as  upward thrust would be zero if the object is falling freely. So, ice cube floats with any volume submerged.

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Some More Questions From Mechanical Properties of Fluids Chapter

Can fluids withstand normal stress?

Why the fluids do not have any modulus of rigidity?

Which phase of fluid is more compressible?

What is an ideal liquid?

Do liquids exert pressure?

Define pressure.

What is the direction of pressure?

What is the direction in which pressure exerts force on the walls of a container?

What is the SI unit of pressure?