Mechanical Properties

What is the SI unit of stress?

Which of the following is a measure of a material's stiffness?

If a wire of length L and cross-sectional area A is stretched by a force F causing an extension ΔL, the formula for Young's modulus (Y) is:

A copper wire of length 2 m and diameter 0.5 mm is stretched by a force of 10 N. Given Young's modulus of copper is 1.1 × 10¹¹ Pa, what is the approximate extension produced?

Which property of a material describes its ability to resist volume change under pressure?

The ratio of lateral strain to longitudinal strain in a stretched wire is called:

If the shear stress on a material is 50 N/m² and the shear strain produced is 0.002, what is the shear modulus?

A wire is stretched within its elastic limit. If the length is doubled and the diameter is halved, how does the extension change under the same applied force?

Which of the following statements is TRUE for a perfectly plastic material?

In the context of Indian infrastructure, why is the knowledge of mechanical properties of materials important?