Criterion A: The choice of the topic is justified through apparent personal significance, interest, or curiosity

Comment: The student justified the choice of the topic by explaining their personal interest and curiosity in investigating the relationship between the distance of a mass from the center and the period of oscillation of a bifilar pendulum. They mentioned being inspired by a video on YouTube and their learning experience during their physics HL course, which demonstrates personal significance and interest in the topic

Criterion A: Evidence of personal input and initiative in the designing, implementation, or presentation of the investigation is present

Comment: There is no mention of preliminary trials conducted by the student while designing their experimental procedure. In the methodology, the student should have included a section devoted to describing the preliminary trial they had conducted before conducting the actual experiment to present their initial plan for the experiment and discuss possible adjustments to the experimental procedure they have made after conducting the trial. The procedure of the trial should have been described by the student step by step and any methodological issues found during the trial should have been discussed

Criterion B: A focused and detailed topic of the investigation is identified

Comment: The topic of investigation, 'the relationship between the distance of a mass from the center of the pendulum and the period of oscillation of a bifilar pendulum' is well-defined and provides a clear direction for the investigation

Criterion B: A relevant and fully focused research question is clearly described

Comment: The research question does not clearly specify the method of measurement for the period of oscillation in the bifilar pendulum. To improve clarity, the question should have included a statement such as "as measured by..." to explain how the period was determined. The revised research question could have been: "How does the change in the distance (0, 0.1, 0.2, 0.3, 0.4, 0.5 m) of two identical masses from the center of a bifilar pendulum affect its period of oscillation (s), as measured by using a stopwatch to record the time for multiple complete oscillations?" Including this detail would make the method of measurement more explicit and enhance the precision of the research question

Criterion B: The physics is explained well enough for the reader to fully and easily understand it without the need of rereading

Comment: The background information section lacks visual aids that would help clarify the concepts being discussed. Including relevant visuals, such as a diagram of the bifilar pendulum setup, showing the positioning of the masses and how their distance from the center changes, would significantly enhance understanding. Additionally, a figure illustrating the concept of oscillation and period would make the background information more engaging and easier to follow

Criterion B: The methodology of the investigation is focused on addressing the research question

Comment: The independent and dependent variables are not properly described in the report. The student should have clearly explained how these variables were adjusted and measured. For example, the method used to measure the period of oscillation should have been detailed, including the specific equipment (e.g., a stopwatch app) used. Additionally, the student should have listed all the values of the distance between the two masses for which the experiment was repeated. Providing this information would ensure clarity and precision in the methodology, making the investigation more focused and replicable

Criterion B: The methodology of the investigation includes steps to assure the relevance and reliability of the collected data

Comment: The methodology includes steps to assure the relevance and reliability of the collected data, such as controlling variables, conducting multiple trials, and addressing safety, ethical, and environmental considerations, ensuring the rigor of the investigation

Criterion B: The methodology of the investigation includes steps to assure the relevance and reliability of the collected data

Comment: The methodology includes steps to assure the relevance and reliability of the collected data, such as controlling variables, conducting multiple trials, and addressing safety, ethical, and environmental considerations, ensuring the rigor of the investigation

Criterion B: The methodology of the investigation includes steps to assure the relevance and reliability of the collected data

Comment: The methodology includes steps to assure the relevance and reliability of the collected data, such as controlling variables, conducting multiple trials, and addressing safety, ethical, and environmental considerations, ensuring the rigor of the investigation

Criterion B: The student shows full awareness of safety hazards that can arise during the procedure

Criterion B: The student shows full awareness of the ethical issues that are relevant to the procedure

Criterion B: The student shows full awareness of environmental issues that are relevant to the procedure

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