ELI5: Explain Like I'm 5

Flexural strength

Flexural strength is like the strongness of a stick. You know how sometimes you pick up a stick and it's strong and doesn't break easily, but sometimes you pick up a stick and it's weak and breaks easily? Flexural strength is about measuring how much weight or pressure a stick - or any other material - can take before it breaks when it is bent or twisted.

So, just imagine that you have a long, skinny stick. Now, if you push down on the end of this stick, it'll bend. That's not so strong, right? But, as you keep pushing down on it, the stick will bend more and more until it finally breaks. That's flexural strength! It's the amount of force or pressure the stick can take before it breaks.

Similarly, other materials such as plastic, metal or concrete tend to bend a little when they experience pressure or weight. But, if they bend too much, they might break. And flexural strength is a measure of how much pressure or weight they can handle before they break.

The higher the flexural strength of a material, the better it is at withstanding force or stress from being bent, twisted or stretched. This is important because we use all kinds of things around us that need to be strong and durable, like furniture, buildings, bridges, and even toys. So, flexural strength is an important factor to consider when choosing materials to make things out of.