Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
A-level
PHYSICS
Paper 3
Section B Engineering physics
Monday 3 June 2025 Afternoon 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.
For Examiner’s Use
Instructions
• Use black ink or black ball-point pen. Question Mark
• Fill in the boxes at the top of this page. 1
• 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.
• If you need extra space for your answer(s), use the lined pages at the end of 4
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
Section B box
Answer all questions in this section.
0 1 The fly-press shown in Figure 1 is used by a jeweller to punch shapes out of a thin
metal sheet.
Figure 1
The frame holds a screw and punch. Two arms are attached to the screw, each
loaded with a heavy steel ball. The screw is driven downwards when the arms are
rotated.
Kinetic energy is stored in the rotating parts: the balls, arms, screw and punch. This
energy is used to punch the shape out of the metal sheet.
0 1 .1 When the punch reaches the metal sheet, the rotational speed of the arms is
2.9 rev s−1. At this speed the rotational kinetic energy of the rotating parts is 10.3 J.
Calculate the moment of inertia of the rotating parts about the axis of rotation.
[2 marks]
moment of inertia = kg m2
*02*
, 3
Do not write
outside the
0 1 .2 The total mass of the screw, punch and arms is the same as the total mass of the two box
balls.
Explain why the moment of inertia of the screw, punch and arms about the axis of
rotation is much smaller than the moment of inertia of the steel balls about the same
axis.
[2 marks]
0 1 .3 During the punching of the metal sheet, the rotating parts of the fly-press are brought
uniformly to rest from an initial rotational speed of 2.9 rev s−1 in a time of 89 ms.
Determine
• the angular deceleration
• the angle turned through by the rotating parts.
[3 marks]
angular deceleration = rad s−2
angle = rad
Question 1 continues on the next page
Turn over ►
*03*
Centre number Candidate number
Surname
Forename(s)
Candidate signature
A-level
PHYSICS
Paper 3
Section B Engineering physics
Monday 3 June 2025 Afternoon 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.
For Examiner’s Use
Instructions
• Use black ink or black ball-point pen. Question Mark
• Fill in the boxes at the top of this page. 1
• 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.
• If you need extra space for your answer(s), use the lined pages at the end of 4
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
Section B box
Answer all questions in this section.
0 1 The fly-press shown in Figure 1 is used by a jeweller to punch shapes out of a thin
metal sheet.
Figure 1
The frame holds a screw and punch. Two arms are attached to the screw, each
loaded with a heavy steel ball. The screw is driven downwards when the arms are
rotated.
Kinetic energy is stored in the rotating parts: the balls, arms, screw and punch. This
energy is used to punch the shape out of the metal sheet.
0 1 .1 When the punch reaches the metal sheet, the rotational speed of the arms is
2.9 rev s−1. At this speed the rotational kinetic energy of the rotating parts is 10.3 J.
Calculate the moment of inertia of the rotating parts about the axis of rotation.
[2 marks]
moment of inertia = kg m2
*02*
, 3
Do not write
outside the
0 1 .2 The total mass of the screw, punch and arms is the same as the total mass of the two box
balls.
Explain why the moment of inertia of the screw, punch and arms about the axis of
rotation is much smaller than the moment of inertia of the steel balls about the same
axis.
[2 marks]
0 1 .3 During the punching of the metal sheet, the rotating parts of the fly-press are brought
uniformly to rest from an initial rotational speed of 2.9 rev s−1 in a time of 89 ms.
Determine
• the angular deceleration
• the angle turned through by the rotating parts.
[3 marks]
angular deceleration = rad s−2
angle = rad
Question 1 continues on the next page
Turn over ►
*03*
