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Solved: A specimen of oil having an initial volume of 600
Chapter 11, Problem 35E(choose chapter or problem)
Problem 35E
A specimen of oil having an initial volume of 600 cm3 is subjected to a pressure increase of 3.6 X 106 Pa, and the volume is found to decrease by 0.45 cm3. What is the bulk modulus of the material? The compressibility?
Questions & Answers
QUESTION:
Problem 35E
A specimen of oil having an initial volume of 600 cm3 is subjected to a pressure increase of 3.6 X 106 Pa, and the volume is found to decrease by 0.45 cm3. What is the bulk modulus of the material? The compressibility?
ANSWER:
Solution 35E
When Hooke’s law is obeyed, an increase in pressure (bulk stress) produces a proportional bulk strain (fractional change in volume). The corresponding elastic modulus (ratio of stress to strain) is called the bulk modulus, denoted by B.
B = =
Where = Change in the pressure from to +
= The ratio of volume change to the original volume
Step 1 of 2:
The bulk modulus of the material is given by
B =
=
= 4.8Pa