Stress and Strain

What is compressive stress?

• The stress that occurs when an object is being pushed or squeezed, causing it to become shorter and thicker.

• The stress that occurs when an object is being twisted or bent, causing it to change its shape.

• The stress that occurs when an object is at rest and not experiencing any external forces.

• The stress that occurs when an object is being pulled or stretched, causing it to become longer and thinner.

What is tensile stress?

• Force per unit length applied to a material when it is stretched or pulled.

• Force per unit area applied to a material when it is compressed.

• Force per unit volume applied to a material when it is stretched or pulled.

• Force per unit area applied to a material when it is stretched or pulled.

Define compressive strain.

• Measure of deformation or change in volume of a material when subjected to compressive stress.

• Measure of deformation or change in length of a material when subjected to compressive stress.

• Measure of deformation or change in shape of a material when subjected to compressive stress.

• Measure of deformation or change in density of a material when subjected to compressive stress.

Define tensile strain.

• The force per unit area that a material can withstand before breaking.

• The ratio of the change in volume of a material to its original volume when subjected to tensile stress.

• The ability of a material to resist deformation under tensile stress.

• The ratio of the change in length of a material to its original length when subjected to tensile stress.

Which type of stress occurs when an object is being pushed or squeezed?

• compressive stress

• thermal stress

• shear stress

• tensile stress

Which type of stress occurs when an object is being pulled or stretched?

• tensile stress

• bending stress

• shear stress

• compressive stress

Which type of strain occurs when an object is being compressed?

• compressive strain

• torsional strain

• shear strain

• tensile strain

Which type of strain occurs when an object is being stretched?

• tensile strain

• torsional strain

• shear strain

• compressive strain

What is the formula to calculate stress?

• stress = force * area

• stress = force + area

• stress = force / area

• stress = force - area

What is the formula to calculate strain?

• Strain = Change in length / Final length

• Strain = Change in length * Original length

• Strain = Change in length / Original length

• Strain = Change in length + Original length