Parabolic motion analysis report / friction measurement pre-report

소개글

포사체운동 결과보고서 마찰력실험 예비보고서

목차

1. Parabolic motion experiment result and analysis
2. Parabolic motion experiment conclusion
3. Parabolic motion experiment discussion
4. Purpose of friction measurement experiment
5. Background theory of friction measurement
6. Friction measurement experiment procedure

본문내용

3. Parabolic motion experiment discussion
Cause of errors
The velocity measured by the Photogate head is not a real velocity per second in strict meaning.
Existence of air friction
Ways to reduce the errors
Use of a new theoretical model to include the effects of air friction
Analyze the results assuming the position of the photogate head as the origin.
The reason for the theoretical values to be smaller at 30 and 45  in the experiment C1
The velocity measured by the Photogate head is smaller than true velocity (the position of the photogate head is higher than that of the projectile launcher).
Real locus is determined by a big velocity.
However, the theoretical value was calculated with a smaller measurement value, which hence caused smaller traveling distance and smaller maximum height.
Nevertheless, the reason for the traveling distance and the maximum height are smaller at 60 is that the interfering external factors like air friction become more influential at 60  than 30  or 45 .

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