91524 Mechanical systems
What you'll learn
This course covers the things you'll need to know and be able to do for achievement standard 91524.
In it you'll find out about giving comprehensive explanations and solving problems relating to:
- Centre of mass in one and two dimensions; conservation of momentum and impulse in two dimensions
- Velocity and acceleration of, and resultant force on, objects moving in a circle under the influence of two or more forces; Newton’s law of gravitation, satellite motion
- Constant angular acceleration, torque, rotational inertia, conservation of angular momentum, conservation of energy
- The conditions for simple harmonic motion; angular frequency; variation of displacement, velocity and acceleration with time; phasor diagrams; reference circles; damped and driven systems; resonance; conservation of energy.
How you'll learn
There are a variety of ways you can learn and interact with the materials in this course.
Self-paced learning – the material is set up so you can learn at your own pace. Although there are 'suggested' times for each page, they're just a guideline - plan your learning to suit you.
Practice activities – throughout this course there are short activities. These activities are for you, not for someone to mark them. These activities give you a great chance to practise what you've learned and compare your answer to the model feedback. Look at the feedback carefully to see if you have missed out any aspects from your answer.
Submitting photos – sometimes people find it easier to scribble down a diagram or show their working with pen and paper. No problem! You can still store all your working and diagrams with the activity. That way you'll be able to refer back to your answers when you're revising. Simply take a photo of your work and upload it with the relevant activity.