Edexcel A-Level Physics A2 6.5.2 Graph Plotting with Scale and Units Questions

Review graph plotting with scale and units in Edexcel A-Level Physics through processed columns, labelled axes, suitable scales and best-fit lines.

Exam points

plot processed data columns accurately with labelled axes, units and sensible scales
draw best-fit lines with an even spread of plotted points for practical graphs
criticise graphs for too few points, narrow ranges, small scales or unreasonable scatter

[Maximum number: 5]

A student investigated the damping of a rotational pendulum using the apparatus shown.

Figure for Question Edexcel A-Level Physics A2 6.5.2 Graph Plotting with Scale and Units Questions question 1 — Edexcel A-Level Physics A2

When the metal rod is rotated through an angle and released, the rod performs angular oscillations about a vertical axis through the wire. The plastic sheets dampen the oscillations as they move through the air.

The student displaced the metal rod by a large angle. He recorded the maximum displacement angle every 10 oscillations.

n	$\theta/^{\circ}$
10	124
20	82
30	55
40	37
50	25
60	16

Plot a graph of $\ln\theta$ against n on the grid opposite. Use the additional column for your processed data.

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Edexcel A-Level Physics A2 6.5.2 Graph Plotting with Scale and Units Questions question 1