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Edexcel A-Level Physics Measuring Variables

Practise Edexcel A-Level Physics measuring variables with timing methods, ruler alignment, extension readings, force measurement and accuracy techniques.

Syllabus
Pearson Edexcel International Advanced Subsidiary/Advanced Level
Course
Physics XPH11/YPH11
Level
AS

Exam points

  • measure periods by timing several oscillations, repeating trials and calculating a mean
  • use rulers, set squares or perpendicular viewing to reduce parallax in distance readings
  • determine force or acceleration from apparatus readings, diagrams and calculated quantities

3.3.4 - Measuring variables question 1

[Maximum number: 3]

A student investigated the motion of a small sphere on a curved track using the apparatus shown.

Figure for Question 3.3.4 - Measuring variables question 1 — Edexcel A-Level Physics AS

The student marked the track at the rest position of the sphere.

The student then marked the track at the start position of the sphere.
She used a metre rule to measure the horizontal distance d between the two marks on the track.

Describe an accurate method to measure a single value of d.

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