
Concept explainers
What happens to rock when stress exceeds a rock’s elastic limit?

The condition of the rock when stress exceeds a rock’s elastic limit.
Answer to Problem 12RQ
The rock will lose its original form and acquire different form of shape.
Explanation of Solution
The generation of stress in the rock tends to produce deformation. If stress occurred on the rock remains under the elastic limit, then the rock will not undergo permanent deformation. It will regain its original shape after the removal of stress.
But if the stress occurred on the rock exceeds the elastic limit, then the deformation of the rock will be permanent. In permanent deformation, the rock losses its original shape and acquires the new shape.
Conclusion:
Therefore, the rock will lose its original form and acquire different form of shape.
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