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2024 AQA A-Level PHYSICS 7408/3B Paper 3 Section BC Verified Question Paper and Marking Scheme Attached June 2024 $7.99
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2024 AQA A-Level PHYSICS 7408/3B Paper 3 Section BC Verified Question Paper and Marking Scheme Attached June 2024

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2024 AQA A-Level PHYSICS 7408/3B Paper 3 Section BC Verified Question Paper and Marking Scheme Attached June 2024 A-level PHYSICS Paper 3 Section B Engineering physics Monday 17 June 2024 Materials For this paper you must have: • a pencil and a ruler • a scientific calc...

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  • February 4, 2025
  • 43
  • 2024/2025
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  • 2024 aqa a level physics 74083b paper 3 section b

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  • 2024 AQA A-Level PHYSICS 7408
  • 2024 AQA A-Level PHYSICS 7408

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2024 AQA A-Level PHYSICS 7408/3B Paper 3 Section BC
Verified Question Paper and Marking Scheme Attached
June 2024
A-level
PHYSICS
Paper 3
Section B Engineering physics

Monday 17 June 2024 Morning Time allowed: The total time for
both sections of this paper is
Materials
For this paper you must have: 2 hours. You are advised to
• a pencil and a ruler spend approximately
• a scientific calculator 50 minutes on this section.
• a Data and Formulae Booklet
• a protractor.
For Examiner’s Use
Instructions Question Mark
• Use black ink or black ball-point pen.
1
• Fill in the boxes at the top of this page.
• Answer all questions. 2
• You must answer the questions in the spaces provided. Do not write 3
outside the box around each page or on blank pages. 4
• If you need extra space for your answer(s), use the lined pages at the end of
this book. Write the question number against your answer(s). TOTAL
• Do all rough work in this book. Cross through any work you do not want
to be marked.
• Show all your working.

Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 35.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.

, 2
Do not write
outside the
There are no questions printed on this page box




DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED

, 3
Do not write
outside the
Section B box


Answer all questions in this section.


0 1 A heavy turntable is mounted on a fixed base. The turntable can rotate freely on a
low-friction bearing.
0 1
. 1 Figure 1 shows a propeller unit fixed to the centre of the turntable.
The propeller unit consists of a motor-driven propeller and a battery.
The propeller and the turntable have a common axis of rotation.

Figure 1




At first, the turntable and the propeller are at rest.
The propeller motor is switched on and the propeller quickly reaches a high final
angular speed.
The propeller rotates clockwise when viewed from above.

Compare, with reference to angular momentum, the motions of the turntable and the
propeller.
[3 marks]




Question 1 continues on the next page

Turn over ►

, 4
Do not write
outside the
0 1 . 2 Figure 2 shows an arrangement used to determine the moment of inertia of the box

turntable.

Figure 2




A small steel mass is held by an electromagnet above the top surface of the turntable.
The diameter of the turntable is about half a metre.
The turntable rotates freely at an initial angular speed ω1.

The switch is opened so that the mass falls and sticks to the surface of the turntable.
This changes the angular speed of the turntable to ω2.
The steel mass can be considered to be a point mass.

Describe how to determine the moment of inertia of the turntable using observations
of ω1 and ω2.
In your answer you should:

• suggest how ω1 and ω2 are measured
• state any other measurements needed and name the equipment used to make
them
• explain how the moment of inertia of the turntable is determined from the
measurements.
[6 marks]

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