Diagnostic Assesment : Deformation of Solid

The effect of a force on an object can be described in several ways, depending on the nature of the force and the object. Here are some of the main effects of a force:

(Multiple correct answers)

• Change in Motion: A force can cause an object to accelerate

• Deformation: A force can cause an object to change its shape or deform.

• Change in Direction: A force can cause an object to change its direction of motion.

• 1. Stress and Strain: A force can cause an object to experience stress and strain, which can lead to changes in its shape or even breakage.

• Energy Transfer: A force can cause energy to be transferred from one object to another.

If the material recovers the original dimensions, when an external load is removed, this deformation is known as ______ deformation

• plastic

• elastic

• permanent

• reversible

If the material can't recovers the original dimensions, when an external load is removed, this deformation is known as ______ deformation

• elastic

• plastic

• permanent

• reversible

In physics, what is the term for the change in the shape or size of an object?

• Deformation

• Tensile force

• Compressive force

• Stress

What is the term for the stretching forces acting on a material?

• Deformation

• Tensile force

• Compressive force

• Stress

What is the term for the physical force that presses inward on an object, causing it to become compacted?

• Deformation

• Tensile forec

• Compressive force

• Strain

Which is true statement about limit of proportionality?

(multiple correct answer)

• The limit of proportionality marks the boundary between elastic and plastic behavior in materials

• Beyond this limit, the material no longer returns to its original shape and size upon the removal of the load

• Beyond this limit, the material will returns to its original shape and size upon the removal of the load

• When the stress exceeds the limit of proportionality, the material is approaching its elastic limit

force-extension graph showing a material under loads which exceed the elastic limit. please label A, B, C , D and E based on the graph!

(multiple correct answer)

• A = limit of proportionality

• B = yield point

• C = limit of elasticity

• D = plastic deformation

• E = elastic deformation

Hooke's law states that....

• the extension is proportional to the load when the elastic limit is not exceeded

• the extension is independent of the load when the elastic limit is not exceeded

• load is dependent on extension

• the extension is inversely proportional to the load when the elastic limit is not exceeded

the picture shows the force–extension graphs for

four springs, A, B, C and D. State which is the stiffest spring.

• A

• B

• C

• D

• B and D has the same spring force constant