*SUMMARY ON AGP202*
_Gravity Methods, Solar system and Earthquake (Seismic)_ Magnetic Methods and Polar wandering later Topic 1️⃣ *GRAVITY METHODS* *Theory of Gravitation* Newton's law of gravity, which quantifies the mutual attraction between two masses m1 and m2 separated by a distance r given by:- F = Gm1m2/R² (N) G= Universal gravitational constant = 6.67 × 10-¹¹Nm²kg-² *NOTE:-* The attraction that is exerted by the Earth (mass M) on any mass m outside of it in the surface of the Earth is directed towards acceleration. - This is because a point mass and a spherical symmetrical body of the same total mass have exactly the same gravitational field g = GM/R² p=5520kgm-³ - This is greater than the densities of rocks (2500-3000) indicates that the Earth's density increases towards the centre of the Earth. The net gravitational force at any point on the surface is the resultant of forces due to internal and centrifugal action. *IGF - International Gravity Form...