Key term
Eduqas A-Level Physical Education A550QS
Health, Fitness and an Active Lifestyle
Short-Term Responses to Exercise
Long-Term Adaptations to Exercise
Fitness Testing and Components of Fitness
Training Methods, Principles and Periodisation
Topic overviewSpecificity, progressive overload, reversibility, variance and FITTContinuous, fartlek, interval and high intensity trainingWeight, plyometric, circuit and flexibility trainingAltitude training and training in hot and cold climatesTraining zones, heart rate monitoring and periodisation
Energy Systems
Fatigue and Recovery
Diet, Nutrition and Supplements
Injury Prevention and Rehabilitation
Joints and the Musculo-Skeletal System
Planes, Axes and Movement Patterns
Biomechanical Principles and Levers
Linear and Angular Motion
Projectile Motion and Fluid Mechanics
Performance Analysis
Technology in Sport
Personality
Attitudes
Goal Setting
Stress, Arousal and Anxiety
Motivation
Aggression
Social Facilitation
Group Dynamics and Leadership
Attribution Theory
Self-Efficacy and Confidence
Skill, Ability and Skill Classification
Learning Curves, Theories and Stages
Transfer, Practice and Guidance
Information Processing, Memory and Feedback
Sport, Culture and Society
The Emergence of Modern Sport
Ethics, Deviance and Doping
Social Differentiation in Sport
Sport and the Mass Media
Commercialisation and Globalisation
Biomechanical Principles and Levers
Stability, centre of mass and equilibrium
- 3 things to know
- Components 1 and 2
Overview
The centre of mass and the Fosbury flop, stability and stable, unstable and neutral equilibrium, the base of support, the height of the centre of mass, the line of gravity, body mass, the sprint start, the tackle and the handstand.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
What is centre of mass?
Key term
Where is the centre of mass of an adult standing upright?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is centre of mass?
Model answer
The centre of mass is the point at which a body's mass is concentrated and balanced. Weight can be taken to act through this point.
- 2
Where is the centre of mass of an adult standing upright?
Model answer
The centre of mass of an upright adult lies at about hip height, near the navel. The centre of mass moves whenever the body changes shape.
- 3
How can a performer's centre of mass lie outside the body?
Model answer
Body shapes such as a pike or an arched back move the centre of mass outside the body. The point then sits in the space the body curves around.
- 4
How does the Fosbury flop let a high jumper clear a higher bar?
Model answer
The jumper arches over the bar so the centre of mass passes beneath it. The body clears a bar higher than its centre of mass reaches, saving energy.
- 5
What is 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 a disturbance.
- 6
What is stable equilibrium? Give a sporting example.
Model answer
A body in stable equilibrium returns to its original position after a small push. A wrestler in a low, wide stance is an example.
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.