Supports are really important for keeping buildings and other structures standing strong and still! 🌟

1. Types of Supports:

• Pinned Support:

  • This type lets things turn but doesn’t allow them to move side to side.
  • It helps with two forces to keep everything in place.

• Roller Support:

  • This one lets things turn and also move a little side to side.
  • It only helps with one force.

• Fixed Support:

  • This type doesn’t allow anything to turn or move at all.
  • It provides three forces to hold everything steady!

2. How Supports Help with Stability:

• These supports work to make sure that all the upward forces equal all the downward forces (this is called the sum of vertical forces, $\Sigma F_y = 0$)

• They also make sure that all the forces going side to side equal each other (this is called the sum of horizontal forces, $\Sigma F_x = 0$).

• Plus, it's important that the moments (which are like twists or turns) around any point add up to zero ($\Sigma M = 0$)!

Knowing how these supports work is really important for building safe and stable structures! 🎉