Stress & Strain

A ratio between force exerted per unit cross sectional area of a wire is known as

Strain of a material is a ratio of original length over elongation. Is this true or false

Pick the suitable units for stress?

• Newton per cubic meter

• Pascal

• Newton per square meter

• Newton

Strain has a unit of

• Meter

• Square meter

• Newton per meter

• None of above

Tick which statement(s) are FALSE

• Strain is a vector quantity

• Stress is a scalar quantity

• Stress is a vector quantity

• Strain has no unit

Materials will lengthened under tensile stress but under compressive stress materials will shortened. Decide is this statement is TRUE or FALSE

Strain is a __________ quantity

Which is the correct properties of stress?

• Stress is a scalar quantity with SI unit of N.m^-2

• Stress is a vector quantity with SI unit of N.m^-2

• Stress is a scalar quantity with no unit

• Stress is a vector quantity with unit of Pascal