AQA Mechanics 2
Moments and Centre of Mass 

Finding the moment of a force about a given point. 
Knowledge
that when a rigid body is in equilibrium, the resultant 
Determining the forces acting on a rigid body when in equilibrium.

This will
include situations where all the forces are parallel, as on a 
Finding centres of mass by symmetry (e.g. for circle, rectangle).
Finding the centre of mass of a system of particles.
Finding the centre of mass of a composite body.
Finding the position of a body when suspended from a given point and in equilibrium


Kinematics 

Relationship
between position, velocity and 
Application of calculus techniques will be required to solve problems

Finding position, velocity and acceleration vectors, by differentiation or integration. 

Newton's Laws of Motion 

Application of Newton's laws to situations, with variable acceleration. 
Problems
will be posed in one, two or three dimensions and may 
Application of Differential Equations 

Onedimensional problems where simple differential equations are formed as a result of the application of Newton's second law 

Uniform Circular Motion  Khan Academy Videos 

Motion of a particle in a circle with constant speed. 
Problems
will involve either horizontal circles or situations, such as a 
Knowledge and use of the relationships


Angular speed in radians s1 converted from other units such as
revolutions per minute or time for one revolution. 
Use of the term angular speed. 
Position, velocity and acceleration vectors in relation to circular motion in terms of i and j. 
Candidates may be required to show that motion is circular by showing that the body is at a constant distance from a given point 
Conical pendulum. 

Work and Energy  Khan Academy Videos 

Work done by a constant force. 
Forces may or may not act in the direction of motion. 
Gravitational potential energy. 
Universal law of gravitation will not be required. Gravitational Potential Energy = mgh 
Kinetic energy. 
Kinetic Energy 1/2mv^{2} 
The workenergy principle. 
Use of Work Done = Change in Kinetic Energy. 
Conservation of mechanical energy. 
Solution of problems using conservation of energy. Onedimensional problems only for variable forces. 
Work done by a variable force. 
Use of ∫ F dx will only be used for elastic strings and springs. 
Hookes law. 

Elastic potential energy for strings and springs. 
Candidates will be expected to quote the formula for elastic potential energy unless explicitly asked to derive it. 
Power, as the rate at which a force does work, and the relationship P = Fv. 

Vertical Circular Motion  Khan Academy Videos 

Circular motion in a vertical 
Includes conditions to complete vertical circles. 