Hydraulic Lift with Pascal's Law
 |
| Hydraulic Lift with Pascal's Law |
Materials Needed:
- 1-Two syringes of different sizes (one large and one small)
- 2-Plastic tubing or small flexible straws
- 3-Water
- 4-Small plastic cup or container
- 5-Optional: Food coloring for visibility
Procedure:
1-Fill the small plastic cup with water. You can add a few drops of food coloring to make the water more visible.
2-Attach one end of the plastic tubing or straw to the opening of the small syringe. Make sure it's securely attached and airtight.
3-Fill the small syringe with water by drawing the plunger back, creating a vacuum and pulling water into the syringe through the tubing.
4-Attach the other end of the tubing or straw to the opening of the large syringe. Again, ensure it's tightly sealed.
5-Hold both syringes vertically with the small syringe on top and the large syringe below, ensuring that the tubing or straw is straight and not kinked.
6-Depress the plunger of the small syringe slowly. Observe what happens to the water in the large syringe.
Observation:
- As you depress the plunger of the small syringe, the water inside it is pushed through the tubing into the large syringe.
- Due to Pascal's law, the pressure applied to the water in the small syringe is transmitted undiminished through the tubing to the water in the large syringe.
- You'll notice that the water level in the large syringe rises, indicating that the pressure applied by the small syringe is transmitted to the larger volume of water in the large syringe.
Explanation:
This experiment illustrates Pascal's law by showing how applying pressure to a small area (the small syringe) results in a proportional increase in pressure in a larger area (the large syringe) filled with the same fluid (water). It demonstrates the principle of hydraulic systems, where a small force can be used to generate a larger force by transmitting pressure through an enclosed fluid.
