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Question 18N.3.SL.TZ0.c.i

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Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.3.SL.TZ0.c.i
Level SL Paper 3 Time zone TZ0
Command term Draw Question number c.i Adapted from N/A
c.i.
[Maximum mark: 1]
18N.3.SL.TZ0.c.i

In an investigation to measure the acceleration of free fall a rod is suspended horizontally by two vertical strings of equal length. The strings are a distance d apart.

When the rod is displaced by a small angle and then released, simple harmonic oscillations take place in a horizontal plane.

The theoretical prediction for the period of oscillation T is given by the following equation

T = c d g

where c is a known numerical constant.

In one experiment d was varied. The graph shows the plotted values of T against  1 d . Error bars are negligibly small.

Draw the line of best fit for these data.

[1]

Markscheme

Straight line touching at least 3 points drawn across the range ✔

It is not required to extend the line to pass through the origin.

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