Home > Subjects > Physics > Level 3 > 3.4 Mechanical systems > Subject content
- Subject: Physics
- AS: AS90521
- Level: 3
- Credits: 6
- External
Physics 3.4 Demonstrate understanding of mechanical systems
Subject content
Revise work on vectors and analysing motion using graphs and equations.
The topics of mechanical systems that you may be assessed on will include:
- Translational motion:
- centre of mass (1 and 2 dimensions)
- conservation of momentum and impulse (2 dimensions only).
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Circular and rotational motion:
- velocity and acceleration of, and resultant force on, objects moving in a circle under the influence of 2 or more forces, for example, banked corners, vertical circles
- Newton’s law of gravitation, satellite motion
- rotational motion with constant angular speed and with constant angular acceleration
- torque
- rotational inertia
- angular momentum
- rotational kinetic energy
- conservation of angular momentum
- conservation of energy.
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Simple harmonic motion:
- displacement
- velocity
- acceleration
- time and frequency of a particle undergoing SHM
- forced SHM
- resonance
- the reference circle
- phasors
- conservation of energy.
And the relationships you should know and practise, with respect to mechanical systems, are:
Check out these online resources for this achievement standard:
- Mechanics
- Practice in significant figures.
