Key term
AQA A-Level Physical Education 7582
The Cardiovascular System
The Respiratory System
The Neuromuscular System
The Musculo-Skeletal System and Movement Analysis
Energy Systems
Skill, Transfer and Practice
Theories of Learning
Guidance and Feedback
Information Processing and Memory
The Emergence and Globalisation of Sport
Topic overviewPre-industrial society, mob football and real tennisIndustrialisation, urbanisation and rational recreationAssociation football, lawn tennis and Victorian athleticsAmateurs, professionals and women in Victorian sportThe Golden Triangle of sport, media and sponsorshipProfessionalism and elite women's sport since 1950
Equal Opportunities in Sport
Diet and Nutrition
Preparation and Training Methods
Injury Prevention and Rehabilitation
Biomechanical Principles and Levers
Linear and Angular Motion
Projectile Motion and Fluid Mechanics
Personality and Attitudes
Arousal and Anxiety
Aggression
Motivation and Achievement Motivation
Social Facilitation and Group Dynamics
Goal Setting
Attribution Theory
Self-Efficacy and Confidence
Leadership
Stress Management
Concepts of Physical Activity and Sport
Development of Elite Performers
Ethics and Violence in Sport
Drugs in Sport
Sport, the Law and Commercialisation
Biomechanical Principles and Levers
Centre of mass and stability
- 3 things to know
- Paper 2
Overview
The centre of mass and how it moves, the high jump, stability and the factors affecting it, the line of gravity, and stable positions in sprinting, netball and the scrum.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
What is the centre of mass?
Key term
Where is the centre of mass of a person standing upright?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is the centre of mass?
Model answer
The centre of mass is the point at which a body is balanced in all directions. The centre of mass is the point from which weight acts.
- 2
Where is the centre of mass of a person standing upright?
Model answer
The centre of mass is roughly at hip level, just below the navel. The exact position varies with body shape.
- 3
Why does the centre of mass move when a performer changes body position?
Model answer
The centre of mass depends on how body mass is distributed. Arms raised above the head move the centre of mass upwards.
- 4
How can a high jumper's centre of mass pass under the bar while the body goes over?
Model answer
A high jumper arching over the bar forms a curved shape with the centre of mass outside the body. The centre of mass can then pass under the bar.
- 5
Define stability.
Model answer
Stability is the ability of a body to resist being moved from a balanced position. A stable body returns to balance after being disturbed.
- 6
How does the height of the centre of mass affect stability?
Model answer
A lower centre of mass increases stability. A sumo wrestler crouches low to resist being pushed over.
Other ways to work this
The same content, four other ways.
What is inside Levo
Six ways to work the same material.
Every question in Biomechanical Principles and Levers, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
Or £46 a year, about £3.83 a month. Cancel anytime.