Physics 9702/34 — May/June 2021

Cambridge AS Level · Advanced Practical Skills · worked solutions for every part, with the mark scheme

questions

marks

120

minutes

Topics Manipulation, Measurement and Observation · Presentation of Data and Observations · Analysis, Conclusions and Evaluation

Q1Manipulation, Measurement and ObservationPresentation of Data and ObservationsAnalysis, Conclusions and EvaluationFree sample

In this experiment, you will investigate the oscillations of a chain.

(a)

(i)

● Assemble the apparatus as shown in Fig. 1.1 with each nail held securely in a boss and at the same height above the bench. Position the stands so that the distance between the nails is approximately $60\text{ cm}$ .

Fig. 1.1

● Rest one of the metre rules on the nails, as shown in Fig. 1.2.

Fig. 1.2

● The vertical distance between the horizontal metre rule and the lowest part of the chain is $C$ .

Using the other metre rule, measure and record $C$ .

$C$ = ______ $\text{cm}$

(ii)

● Push the bottom of the chain a short distance away from you. Release it so that it swings towards and away from you.

● Take measurements to determine the period $T$ of these oscillations.

$T$ = ______

(b)

Repeat (a) with different distances between the stands until you have six sets of values of $C$ and $T$ .

All values of $C$ must be greater than $15\text{ cm}$ .

Record your results in a table. Include values of $\frac{1}{T}$ and $\frac{1}{\sqrt{C}}$ in your table.

(c)

(i)

Plot a graph of $\frac{1}{T}$ on the $y$ -axis against $\frac{1}{\sqrt{C}}$ on the $x$ -axis.

(ii)

Draw the straight line of best fit.

(iii)

Determine the gradient and $y$ -intercept of this line.

gradient = ______

$y$ -intercept = ______

(d)

It is suggested that the quantities $T$ and $C$ are related by the equation

\frac{1}{T} = \frac{a}{\sqrt{C}} + b

where $a$ and $b$ are constants.

Use your answers in (c)(iii) to determine the values of $a$ and $b$ .
Give appropriate units.

$a$ = ______

$b$ = ______

The rest of this paper

1 more questions

Q2Manipulation, Measurement and Observation · Analysis, Conclusions and Evaluation · Presentation of Data and Observations20M

Loading the full paper…