Analysis, calculations and results

What is the act of applying a force known as?

• Compression

• Loading

• Tension

• Shear

Who discovered Hooke's law?

• Galileo Galilei

• Albert Einstein

• Robert Hooke

• Isaac Newton

What is the mathematical expression for Hooke's law?

• F = k - X

• F = -kX

• F = k + X

• F = kX

What is Young's modulus a measure of?

• Density

• Elasticity

• Mass

• Volume

What is the formula for calculating strain?

• ε=(l-lo)/lo

• ε=(l-lo)*lo

• ε=(l+lo)/lo

• ε=(l/lo)-1

What are the three stages observed in stress-strain curves for ductile materials?

• Elastic, plastic, rupture

• Elastic, yield, fracture

• Elastic, strain hardening, necking

• Elastic, compression, tension

What is the most common method for plotting a stress-strain curve?

• Compression test

• Shear test

• Torsion test

• Tensile test

What does the green color in the stress-strain curve interpretation represent?

• A plastic material

• A brittle material

• A strong material which is not ductile

• A ductile material

What is the unit of stress in the English system?

• N/m2

• N/m

• Pa

• psi

What is the value of Young's modulus for steel compared to aluminum?

• Twice as much

• Three times greater

• Equal

• Half