Card 20 / 36: Consider a spherical pressure vessel of diameter 100 cm and wall thickness 0.5 cm. If the internal pressure (gauge) is 7 atm, then which of the following represents the tensile stress in the spherical wall?
A)
35.5 MPa
B)
35.5 kPa
C)
71 MPa
D)
71 x 10 5 Pa
E)
71 GPa
Answer:
A) 35.5 MPa
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pr/2b, where p is the internal gauge pressure, r is the sphere radius, and b is the wall thickness. You may refer to the reading for section 2.3.2.
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