ALL of AQA Gravitation in 44 minutes

My Physics Tutoring: zphysicslessons.net/physics-tutoring
Typo: 12:48 Gravitational Potential = - GM/r
Prepare for Paper 3: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join
Get Free Physics Tips: zphysicslessons.net/about

This video covers the whole of AQA Gravitational Fields and Orbits and it also helpful for other exams boards including Edexcel, Oxford AQA, CIE, Edexcel International, Eduqas, WJEC and many others.

Chapters:
00:00 Gravitational Field Lines
01:15 Newton's Law of Gravitation
04:16 Gravitational Field Strength
07:45 Example Problem 1 - Field Strength
09:40 Example Problem 2 - Field Strength
12:30 Gravitational potential
13:38 OFF Spec - why is V=0 at infinity
17:01 Does gravitation potential increase or decrease with distance?
18:49 Equipotential Surfaces
21:57 Example - Equipotential Surfaces
23:21 Graphs - Force against Distance
24:13 Graphs - g against r
24:58 Graphs - V against r
25:30 Orbits - Time Period
26:00 Orbital Speed
27:55 Kinetic Energy of an orbiting satellite
28:40 Derivation T^2 is proportional to r^3 - Method 1
30:42 Derivation T^2 is proportional to r^3 - Method 2
31:44 Total Energy of an orbiting satellite
34:05 Escape Velocity
35:08 Why launch satellites from the equator?
37:04 Synchronous orbits - Geostationary orbit
38:28 The height of a geostationary orbit
42:07 Logarithmic Graphs