Q20
Which type of stress is usually most responsible for tensile cracking in rocks?
A.
Horizontal stress
B.
Compressive stress
C.
Shear stress
D.
Tensile stress
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Tensile stress causes rocks to crack when the stress exceeds their low tensile strength.Rocks are much weaker in tension than in compression.