“This is a Hydraulic Gate Working Model made using syringes and cardboard.
It demonstrates Pascal’s Law – the principle behind hydraulic systems.
When I push the first syringe, water pressure moves the second syringe’s plunger, lifting the gate.
Such hydraulic gates are used in dams, canals, and flood control systems.
Materials Required:
- 2 plastic syringes (10ml or 20ml, no needles)
- 1 plastic tube (to connect syringes)
- Cardboard sheet (for base, gate, and support)
- Glue gun or Fevicol
- Scissors or paper cutter
- Sketch pens, color paper (for decoration)
- Water
Video Steps to Make the Model:
Step 1: Make the Gate
- Cut a rectangular gate piece from cardboard.
- Make two side supports (pillars) from cardboard to hold the gate vertically.
Step 2: Set Up Base
- Fix the two side supports on a rectangular cardboard base.
- Place the gate between these supports so it can move up and down freely.
Step 3: Connect Hydraulic System
- Take two syringes and connect them with a plastic pipe (tight fit).
- Fill one syringe completely with water.
- Fix one syringe to the base using tape or glue.
- Attach the plunger of the second syringe to the bottom of the gate using glue or thread.
Step 4: Operating the Gate
- When you push the plunger of the first syringe, water flows to the second one, pushing its plunger out, and lifting the gate.
- Pulling back will lower the gate.