Learn Extracted exam questions A-Level Physics 9702 Physics November 2025 Question Paper 37
9702 Physics November 2025 Question Paper 37
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In this experiment, you will investigate the equilibrium of a wooden rod.
Some of the apparatus has been set up for you.
Complete the set-up of the apparatus as shown in Fig. 1.2.
Fig. 1.1 shows the rod with two eyes.
The distance between the two eyes on the rod is $S$.
Measure and record $S$.
$S = \hrulefill$
The moment of the force about the eye due to mass P is $T_{\text{P}}$.
The moment of the force about the eye due to mass Q is $T_{\text{Q}}$.
The values of $T_{\text{P}}$ and $T_{\text{Q}}$ are given by:
where $W$ has the value $0.0981\text{ N}$.
Calculate $T_{\text{P}}$ and $T_{\text{Q}}$.
$T_{\text{P}} = \hrulefill$ $T_{\text{Q}} = \hrulefill$
Change the position of Q and adjust the position of P until the rod is again parallel to the bench. Measure $p$ and $q$. Repeat until you have six sets of values of $p$ and $q$.
Record your results in a table. Include values of $T_{\text{P}}$ and $T_{\text{Q}}$ in your table.
Plot a graph of $T_{\text{Q}}$ on the $y$-axis against $T_{\text{P}}$ on the $x$-axis.
Draw the straight line of best fit.
Determine the gradient and $y$-intercept of this line.
gradient = \hrulefill
$y$-intercept = \hrulefill
It is suggested that the quantities $T_Q$ and $T_P$ are related by the equation
where $A$ and $B$ are constants.
Using your answers in \textbf{(c)(iii)}, determine the values of $A$ and $B$. Give appropriate units.
$A = \hrulefill$
$B = \hrulefill$
Theory suggests that
where $R$ is the weight of the rod and $F$ has the value $2.94\text{ N}$.
Use your answers in \textbf{(a)(i)} and \textbf{(d)(i)} to determine a value for $R$. Give an appropriate unit.
$R = \hrulefill$
You may not need to use all of the materials provided.
In this experiment, you will investigate the rolling of a plastic bottle.
You are provided with a plastic bottle with a cap, as shown in Fig. 2.1.
The diameter of the base of the bottle is $d$.
Measure and record $d$.
$d =$ \hrulefill
Estimate the percentage uncertainty in your value of $d$. Show your working.
percentage uncertainty = \hrulefill %
Set up the apparatus as shown in Fig. 2.2.
Stand the bottle upright on the bench.
The height of the water in the bottle is $h$, as shown in Fig. 2.5.
Measure and record $h$.
$h = \hrulefill$
The time for the bottle to roll distance $L$ on the rules is $t$. Take measurements to determine $t$.
$t = \hrulefill$
A value for the acceleration $a$ of the bottle is given by
Calculate $a$.
$a = \hrulefill$
Justify the number of significant figures that you have given for your value of $a$.
- Pour approximately half the water from the bottle into the beaker.
- Repeat \textbf{(c)(i)} and \textbf{(c)(ii)}.
$h = \hrulefill$
$t = \hrulefill$
$a = \hrulefill$
It is suggested that the relationship between $a$ and $h$ is
where $k$ is a constant.
Using your data, calculate \textbf{two} values of $k$.
first value of $k = \hrulefill$
second value of $k = \hrulefill$
It is suggested that the percentage uncertainty in the values of $k$ is 15%.
Using this uncertainty, explain whether your results support the relationship in (e).
Describe \textbf{four} sources of uncertainty or limitations of the procedure for this experiment.
For any uncertainties in measurement that you describe, you should state the quantity being measured and a reason for the uncertainty.
- \hrulefill
- \hrulefill
- \hrulefill
- \hrulefill
Describe \textbf{four} improvements that could be made to this experiment. You may suggest the use of other apparatus or different procedures.
- \hrulefill
- \hrulefill
- \hrulefill
- \hrulefill