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UNIT: |
Liquid surface
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PURPOSE: |
Illustrate the strength of the cohesive force
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EQUIPMENT: |
| 1. |
Adhesion disk with harness |
| 2. |
Small glass container |
| 3. |
Sensitive spring scale |
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SUGGESTIONS: |
| 1. |
Try with water |
| 2. |
Try with another liquid (e.g. cooking oil) In each case
measure the force required to extract the disk from the water |
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DISCUSSION: |
Adhesion Disc
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