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1.5 Forces

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Question 168

A student is investigating the relationship between the extension of a polymer thread of unstretched length 2.000 m2.000\text{ m}2.000 m and the load hung on the thread. She has a set of 5 N5\text{ N}5 N weights.

Consider the readings shown in Table 5.1:

Column 1Column 2Column 3
0002.0002.0002.0000.0000.0000.000
5552.0152.0152.0150.0150.0150.015
1010102.0302.0302.0300.0300.0300.030
1515152.0452.0452.0450.0450.0450.045
2020202.0602.0602.0600.0600.0600.060

Table 5.1

a.

Identify the appropriate column headings, including units, for Column 1, Column 2, and Column 3.

[3]
b.

The student repeats the experiment using a thread made of a different material to study how the material affects extension. State two variables that must be kept constant to ensure a fair test.

[2]
Markscheme

1.5 Forces Questions

  1. IGCSE
  2. /Physics
  3. /1.5 Forces

245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.

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