Mechanical Systems

6 credits - external

Translational Motion

Momentum
Impulse
Systems
Centre of mass in 1 and 2 dimensions
Momentum of a system

Circular Motion

Centripetal force and acceleration
Horizontal circular motion
Vertical circular motion
Orbital motion (satellites)

Angular Motion

Angular acceleration
Torque
Inertia
Angular momentum
Energy conservation

SHM

Conditions for SHM
Angular frequency
V, d and a with respect to time
Phasors
Reference circles
Damping
Resonance

This is Mechanics - how we interact with the laws of the universe.

The resources below are those that are used for teaching and learning in class time. Each lesson is accompanied with a self-assessment question in the format that will already be familiar from NCEA Level 2 exams. Once you have completed a lesson and feel you have a good understanding, have a go at the self assessment question and mark your responses using the assessment schedule provided. This will give you instant feedback and provides an insight into possible areas that may require more focus.

Lessons

Self-Assessments

Translational motion

You will revisit the concepts of vectors, momentum and impulse, and will be introduced to the idea of multiple objects behaving as a system both in 1 and 2 dimensions. This will be used as a bases to apply the theories of conservation of momentum and energy to those systems.

circular motion

You will recap the motion of an object in horizontal circular motion from Level 2 before considering forces acting on an object in vertical circular motion to be able to determine parameters to allow for this motion to occur. Furthermore, you will apply this knowledge to understand orbital motion and how satellites orbit the Earth.

ROTATIONAL motion

Here, you will be introduced to the new concept of spinning or rotating objects and will learn how to apply the kinematic equations from Level 2 to these types of systems.

Oscillating systems / SHM

Simple harmonic motion is the motion of an oscillating system under a specific set of conditions. You will learn how to combine linear and rotational quantities in order to interpret the motion of a system under SHM.

additional resources

Useful Links

LearnCOACH - Mechanical Systems

No Brain Too Small - Mechanical Systems

Moment of Inertia: Rolling and Sliding Down an Incline

NZQA Past Exam Papers and Assessment Schedules

NZIP Past Exam Papers and Assessment Schedules

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