Cambridge
TECHNICALS
CAMBRIDGE TECHNICALS
IN ENGINEERING
LEVEL 3 UNIT 3 – PRINCIPLES OF MECHANICAL
ENGINEERING
RESOURCES LINK
Version 1
Introduction
Resources Link is an e-resource, provided by OCR, for teachers of OCR
qualifications. It provides descriptions of, and links to, a variety of independent
teaching and learning resources that you may find helpful.
In Resources Link you will find details of independent resources, many of which are free:
where this is the case this has been indicated.
If you know of other resources you would like to see included here, or discover broken
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about your use of these, or other, OCR resources. Please contact us at
[email protected].
We leave it to you, as a professional educator, to decide if any of these resources are
right for you and your learners, and how best to use them.
2
Cambridge
TECHNICALS
Resources Link
Contents
First moment of area, composite areas
4
Shear force and bending moments in a simply supported beam
5
Conservation of momentum
6
Momentum-Conservation of Momentum
7
Intro to momentum
8
Elastic and inelastic collisions (momentum)
9
Newton’s laws of motion
10
Mechanical properties of materials
11
Mechanical properties of materials
12
Examples of levers
13
Gear profiles
14
Human power output
15
Human power output
16
SI units
17
3
Cambridge
TECHNICALS
Resources Link
First moment of area, composite areas
Description:
A video giving a clear introduction to the concept
and method of calculation of the first moment of
area of a 2D shape.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Video
https://www.youtube.com/watch?v=nAEBQQNAmzU
4
Cambridge
TECHNICALS
Resources Link
Shear force and bending moments in a simply supported
beam
Description:
A clear definition of bending moments in a simply
supported beam, how they are calculated and
plotted to form a bending moment diagram.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Video
https://www.youtube.com/watch?v=Hd8w_7s_78A
5
Cambridge
TECHNICALS
Resources Link
Conservation of momentum
Description:
A good introduction to the topic of momentum.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Video
https://www.youtube.com/watch?v=V4vzNk4qppw
6
Cambridge
TECHNICALS
Resources Link
Momentum-Conservation of Momentum
Description:
An explanation of the difference between elastic
and inelastic collisions.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Video
https://www.youtube.com/watch?v=rX9GBvCSLo4
7
Cambridge
TECHNICALS
Resources Link
Intro to momentum
Description:
A video exploring the relationship between
Newton’s second and third laws of motion and the
law of conservation of momentum.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Video
https://www.youtube.com/watch?v=Wp9BqnnigkM
8
Cambridge
TECHNICALS
Resources Link
Elastic and inelastic collisions (momentum)
Description:
A video lesson looking at the concepts of elastic
and inelastic collisions.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Video
https://www.youtube.com/watch?v=FeqUREuTnJw
9
Cambridge
TECHNICALS
Resources Link
Newton’s laws of motion
Description:
An introduction to Newton’s laws of motion.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Video
https://www.youtube.com/watch?v=QffUhiX2uSg
10
Cambridge
TECHNICALS
Resources Link
Mechanical properties of materials
Description:
An introduction to the significance of properties of
materials to engineering designers.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Video
https://www.youtube.com/watch?v=0qGrbZPeQew
11
Cambridge
TECHNICALS
Resources Link
Mechanical properties of materials
Description:
A clear explanation of why material properties are
defined in terms of stress and strain rather than
force and displacement.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Video
https://www.youtube.com/watch?v=ZiSwnUDnnIM
12
Cambridge
TECHNICALS
Resources Link
Examples of levers
Description:
The three classes of lever and examples of these as
familiar machines.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Video
http://www.enchantedlearning.com/physics/machines/Levers.shtml
13
Cambridge
TECHNICALS
Resources Link
Gear profiles
Description:
Customisable templates to allow gear profiles to be
cut in a school workshop.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Web page
https://woodgears.ca/gear_cutting/template.html
14
Cambridge
TECHNICALS
Resources Link
Human power output
Description:
An article about harnessing human power.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Web page
http://en.wikipedia.org/wiki/Bicycle_performance
15
Cambridge
TECHNICALS
Resources Link
Human power output
Description:
An article about human power output which can be
linked to topics of work and energy.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Web page
http://en.wikipedia.org/wiki/Human_power
16
Cambridge
TECHNICALS
Resources Link
SI units
Description:
Webpage giving a clear definition of base and
derived SI units.
Supports:
OCR Cambridge Technicals in Engineering Level 3
Unit 3
Cost:
Free
Format:
Web page
http://www.engineeringtoolbox.com/si-unit-system-d_30.html
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Cambridge
TECHNICALS
Resources Link
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TECHNICALS
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