In this experiment, you will investigate the oscillations of a pendulum. (i) ● Assemble the apparatus as shown in Fig. 1.1 with the top nail held securely in the cork by the clamp. Check that the rod can swing freely. ● Slot masses onto the upper and lower nails as shown in Fig. 1.2. ● Load all of the masses onto the nails in the positions shown in Fig. 1.3. ● Record the total mass $M_L$ on the four lower nails. $M_L$ = \_\_\_\_\_\_ (ii) ● Push the bottom of the rod through…

Physics 9702/36 — October/November 2022

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 pendulum.

(a)

(i)

● Assemble the apparatus as shown in Fig. 1.1 with the top nail held securely in the cork by the clamp. Check that the rod can swing freely.

Fig. 1.1

● Slot masses onto the upper and lower nails as shown in Fig. 1.2.

Fig. 1.2

● Load all of the masses onto the nails in the positions shown in Fig. 1.3.

Fig. 1.3

● Record the total mass $M_L$ on the four lower nails.

$M_L$ = ______

(ii)

● Push the bottom of the rod through a short distance and release it so that it oscillates.
● Take measurements to determine the period $T$ of these oscillations.

$T$ = ______

(b)

Rearrange the slotted masses between the upper and lower nails.
Record $M_L$ and determine $T$ . Repeat until you have six sets of values.

Use all of the slotted masses each time so that the mass of the pendulum is constant.

Record your results in a table. Include values of $\sqrt{M_L}$ to three significant figures in your table.

(c)

(i)

Plot a graph of $T$ on the $y$ -axis against $\sqrt{M_L}$ 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 $M_L$ are related by the equation

T = a\sqrt{M_L} + b

where $a$ and $b$ are constants.

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

$a$ = ______
$b$ = ______

The rest of this paper

1 more questions

Q2Manipulation, Measurement and Observation · Presentation of Data and Observations · Analysis, Conclusions and Evaluation20M

Loading the full paper…