Group Lab II: Water Flow

Hydrostatic Water

In our second group lab we studied hydrostatic water. What we wanted o figure out was how long it would take for the water to flow through different sized holes at the bottom of a cylindrical container.

What We Need to Figure Out
Velocity
Volumetric flow rate

Materials
A bucket
Two stable surfaces (notebooks) for containers to balance on
3 Cylindrical containers (empty soups cans with lids removed), label as 1, 2, and 3
Drill with 3 different sized drill bits
Ruler
Stopwatch
Marker

Steps
(The containers were pre-drilled and marked for us)
1. Measure and record diameter of the bottom of the can
2. Drill a hole through the center of the bottom of the can
3. Mark the inside of each can with a line, 3 inches from the bottom
4. Place the soup cans next to each other on the bucket leaving a gap for water flow through
5. Cover the hold of your 1st can with your finger and fill to the marked line
6. Remove finger as you place can on notebooks on buckets, with the hole above the gap
7. Measure the time it takes for the water in the can to deplete.
8. Record data and repeat steps with rest of cans

Results

Here is a chart of our collected data

Here is a chart for out analyzed data

What we observed was that as the size of the hole in each can increases so does the average velocity of the water flow as listed in the chart. Can 3, which had the largets hole, hda the greatest avergae velocity followed by 2 then 1.