AQA A Level Physics w/ Astrophysics
Physics
Derived from https://ankiweb.net/shared/info/1045948758, which was based on the deck made by Ray Amjad.
This version has improved formatting, reduced gramatical errors and LaTeX maths for a better dark mode experience.
Sample Data
| Front | What is the energy of a satellite and how does it work in an elliptical orbit? |
| Back | - The sum of the GPE and KE (which stays constant overall).- Closer to the orbited mass, it speeds up as GPE turns into KE. |
| Front | What is a couple defined as and how can it be calculated? |
| Back | - A pair of equal and opposite coplanar forces.- Force × perpendicular distance between the lines of action of the forces.
 As shown, it can be calculated by taking moments about the centre. Since the system isn’t in equilibrium (as there’s a resultant moment), you cannot use the principle of moments. |
| Front | What is a moment defined as? |
| Back | A force multiplied by the perpendicular distance between the pivot and the line of action of the force.In essence, we’re looking at the turning effect of a force. When we take moments about a point, we can ignore the force acting at the point. So never pick a point where you’d have to consider all distances and forces. |