GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The length a spring can be stretched to before it becomes inelastically deformed.
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The length a spring has been stretched to once it becomes inelastically deformed.
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The most force a spring can hold.
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None of the above
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Detailed explanation-1: -The limit of proportionality is when the amount of force used to deform an elastic material is too large, and the relationship between weight and extension is no longer directly proportional. F = k e, where is the force applied in Newtons, is the spring constant in Newtons per meter, and is the extension in .
Detailed explanation-2: -Limit of proportionality Spring constant is a measure of the stiffness and strength of a spring. The limit of proportionality refers to the point beyond which Hooke’s law is no longer true when stretching a material.
Detailed explanation-3: -When an elastic object is stretched beyond its limit of proportionality, the object does not return to its original length when the force is removed. In this instance, the relationship between force and extension changes from being linear, or directly proportional, to being non-linear.
Detailed explanation-4: -The elastic limit differs from the proportional limit in that the elastic limit is the maximum pressure that may be given to a material without it deforming. The proportional limit of a material is defined as the point at which stress and strain are directly proportional to one another.
Detailed explanation-5: -So, the proportional limit is defined as the highest stress at which the stress-strain curve is a straight line. Below the proportional limit, there is no permanent deformation in a structure, that is, the object returns to its original position after the removal of applied force.