The research question is situated within a specific, discipline-appropriate context, effectively linking torsion pendulums to engineering applications and underlying physics.

The methodology is described step-by-step—listing instruments, dimensions, number of trials, alignment of the light gate, and averaging procedure—allowing reproducibility by another student.

Controlled and uncontrolled variables are identified and linked to their influence on period, demonstrating clear explanatory consideration.

The instruction to “zero the system” is ambiguous; more detail is needed on how the zero reference is established and verified.

The remark on damping lacks citation or data support, weakening the methodological rigor of the context.

The hypothesis linearisation is mismatched (T vs. m rather than T² vs. m), indicating a minor conceptual oversight.

Data are presented in well-labelled tables and a LoggerPro graph with units, providing generally clear communication of recording and processing.

Uncertainties are quantified for mass, wire length, slope, and an overall percentage uncertainty is calculated.

Key processing steps—linearisation of T² vs. m, determination of gradient, and calculation of the torsional constant k—are carried out correctly in principle.

Headings mix ‘Time’ and ‘Period’ and significant figures are inconsistent, reducing precision.

Uncertainty propagation is incomplete: no error bars on the plot, and the radius measurement is excluded from calculations.

Numerical inconsistencies (e.g. incorrect handling of exponents and unit conversions) introduce potential inaccuracies in the final value of k.

The conclusion restates the observed trend that the period increases with mass and quantifies the percentage discrepancy between experimental and theoretical k.

The student makes a relevant comparison to accepted scientific context by discussing the theoretical shear modulus and calculating error.

The claim of ‘strong evidence’ is unsupported given the 36 % discrepancy; the conclusion is not fully justified by the data.

The scientific context comparison is superficial, lacking quantitative analysis of how damping or systematic errors would reconcile the discrepancy.

Specific methodological weaknesses are identified (mass placement, damping, wire parameter tolerance, initial angle variation) and their relative impact on uncertainty is explained.

Realistic improvements are suggested—better mass placement, reduced damping, precise angle measurement—that are relevant to reducing error.

The suggested improvements remain descriptive rather than fully explained in practical or quantitative terms.

No schematic or detailed plan is provided to illustrate how the improvements (e.g. alignment optimization) would be implemented.