Deformation and Hooke's Law Concepts

An object is subjected to a force, and after the force is removed, it returns to its original shape. What type of deformation has occurred?

• Inelastic deformation

• Plastic deformation

• Elastic deformation

• Permanent deformation

What is inelastic deformation sometimes known as?

• Plastic deformation
• Tensile deformation
• Brittle deformation
• Elastic deformation

What term describes the increase in length of a spring when it is stretched?

• Compression

• Weight

• Extension

• Natural length

How do we measure the extension on a spring?

• Measure the weight of the spring only.
• Measure the spring length and minus its original length.

• Use a ruler to measure the spring's total length.

• Calculate the spring's diameter and multiply by a constant.

Which symbol means 'directly proportional'?

• =
• ≠
• <
• ∝

A material with a lower spring constant will be...

• stiffer
• more flexible
• heavier
• less durable

What is a materials 'spring constant'?

• The spring constant is a measure of a spring's stiffness, defined by the ratio of force to displacement.
• The spring constant indicates the color of a spring.
• The spring constant is the maximum load a spring can hold.
• The spring constant measures the temperature of a material.

According to Hooke's Law, what is the relationship between the force applied to an elastic object and its extension?

• Force is inversely proportional to extension.

• Force is directly proportional to extension.

• Force is exponentially related to extension.

• Force is unrelated to extension.

What happens to an object's deformation once the applied force exceeds its elastic limit?

• It becomes more elastic.

• It returns to its original shape more quickly.

• It undergoes inelastic deformation.

• It becomes stiffer.