Measuring Acceleration of Falling Object: Mark Symbol?

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Discussion Overview

The discussion revolves around measuring the acceleration of a falling object using a ticker tape method. Participants are exploring the appropriate symbols to represent the marks on the ticker tape used in the data collection process, as well as clarifying the methodology behind the measurements.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant inquires about the symbol used for the marks on the ticker tape, similar to how grams are represented by "g".
  • Another participant expresses skepticism about measuring acceleration solely through marks on the ticker tape and requests a more detailed explanation of the methodology.
  • A participant describes their experimental setup involving a car with constant velocity and a mass thrown from various heights, but reiterates their question about the symbol for the marks on the tape.
  • Concerns are raised regarding the origin of the marks on the tape, questioning whether they were pre-printed or created during the experiment, which could affect the choice of symbol.
  • One participant suggests that in a lab notebook, it is appropriate to record measurements as "number of marks" and emphasizes the importance of converting these to standard units based on the measuring device's calibration.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the appropriate symbol for the marks on the ticker tape, and there are differing views on the methodology for measuring acceleration.

Contextual Notes

Details regarding the calibration of the measuring device and the specific method of marking the tape remain unclear, which may affect the interpretation of the data.

gnome222
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I used a ticker to measure to measure the acceleration of falling object. And and now I am writing report about it and the problem is what symbol is used for the marks on the ticker tape? Like for grams (g). What would you use for marks(?) ?
 
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It's not clear how you can measure the acceleration of an object just by making some marks on a ticker tape. What are the marks used to indicate?
Please describe more fully what you did.
 
SteamKing said:
It's not clear how you can measure the acceleration of an object just by making some marks on a ticker tape. What are the marks used to indicate?
Please describe more fully what you did.
well, i got a car with constant velocity and let it run for three seconds with ticker tape attached to it. Then i got a 1 gram mass and throw it from 2 meters , 1.75m, 1.5m,1.25m,1 m with ticker tape attached to it. Then i took the frequency of the constant velocity car and found the acceleration of the mass. But my question is what symbol would you use for the marks on the ticker tape when you are processing the data.
 
You haven't explained how the marks got on the tape. Were they on the tape when it was supplied? Did you have a machine put the marks on the tape as the car pulled it through the machine? If so did it put them on at regular time or regular distance intervals? It makes a difference to what symbol might be appropriate.
 
gnome222 said:
I used a ticker to measure to measure the acceleration of falling object. And and now I am writing report about it and the problem is what symbol is used for the marks on the ticker tape? Like for grams (g). What would you use for marks(?) ?

dont u think that there wouldn't be any need of using velocity, displacement and time and then calculate acceleration if there was any possible means of calculating acceleration just like that... please read the basic things about a physical quantity..."
 
In a lab notebook, it is appropriate to record measurements in terms of "number of marks". It is always proper to record measurements in original form. When analyzing the data it is usually important to be able to convert from "number of marks" to elapsed time or some such. The conversion from raw reading to a numeric measure (and error bar) reported in standard units will depend on details of the measuring device and its calibration. We have not been given those details.
 

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