Tensile, Compressive, and Shear Stress

Which of the following materials is commonly used in the construction of crates?

Crates are exclusively used for shipping and storage of goods.

Name a specific type of crate often associated with the dairy industry.

The term 'stackable' in relation to crates refers to their ability to be efficiently ______ for storage or transport.

Match the crate with possible use:

Which of the following is a benefit of using crates for shipping?

All crates are constructed with solid sides to ensure maximum protection of the contents.

What is a common feature of 'milk crates' that makes them useful for their intended purpose?

Besides wood and plastic, another material sometimes used to make crates, especially for heavier items, is ______.

A business looking for crates to protect fragile items during shipping should prioritize which feature?

What are wooden crates?

What are milk crates?

What are shipping crates?

What is a pallet crate?

What are metal crates?

Tensile stress is calculated as $\sigma = \frac{F}{A}$, where $\sigma$ is tensile stress, $F$ is the force, and $A$ is the cross-sectional area.
Elongation is calculated as $\delta = \frac{FL}{AE}$, where $\delta$ is elongation, $F$ is force, $L$ is original length, $A$ is area and $E$ is Young's modulus.

Compressive stress is calculated as $\sigma = \frac{F}{A}$, where $\sigma$ is compressive stress, $F$ is the force, and $A$ is the cross-sectional area.
Change in length is calculated as $\delta = \frac{FL}{AE}$, where $\delta$ is the change in length, $F$ is force, $L$ is original length, $A$ is area and $E$ is Young's modulus.

Shear stress is calculated as $\tau = \frac{F}{A}$, where $\tau$ is shear stress, $F$ is the force, and $A$ is the area.
Shear strain is calculated as $\gamma = \frac{\delta}{L}$, where $\gamma$ is shear strain, $\delta$ is deformation, and $L$ is original length.

A steel rod with a cross-sectional area of $0.2 , \text{m}^2$ experiences a tensile force of $100,000 , \text{N}$.
The tensile stress is calculated as: $\sigma = \frac{F}{A} = \frac{100,000 , \text{N}}{0.2 , \text{m}^2} = 500,000 , \text{N/m}^2 = 500 , \text{kPa}$.