How does the number of holes in a plastic cup affect the time it takes the water to drip out of a cup?

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Physics Internal Assessment

How does the number of holes in a plastic cup affect the time it takes the water to drip out of a cup?

Nhi Le

P.6

Design:

Problem: How does the number of holes in a paper cup affect the time it takes for the water to drip out of a cup?

Hypothesis: If there are more holes in the plastic cup, the time it takes for the water to drip out of the cup would decrease because there is no physical barrier to prevent the water from dripping out.

Manipulated Variable: The number of holes at the bottom of the cup

The number of holes at the bottom of the cup would be measured by puncturing the bottom of the cup with a screwdriver with the number of desired holes. The size of each hole would be approximately 1 cm (±.5mm) due to the tip of the screwdriver.

Responding Variable: The drainage time of the water

A graduated cylinder would be used to measure 50 mL (±2 mL) of water. This then would be poured into the cup. The drainage time of the