Internal forces are really important for keeping buildings and other structures steady. Let’s break it down:

What are Internal Forces?
Internal forces are the pushes and pulls inside a structure. There are a few main types:

• Tension: This is when a material is stretched.
• Compression: This is when a material is squished together.
• Shear Forces: These are like slamming two slices of bread together.
• Bending Moments: This happens when something is bent or curved.

Keeping Balance
When these internal forces are balanced, the structure stays stable. But if one force becomes too strong, it could cause the structure to break or collapse.

How Materials React
Different materials behave differently when faced with these internal forces. This affects how engineers design buildings and bridges.

So, knowing about these forces helps engineers build safer and stronger structures.