The discussion centers on gravitational force and escape velocity, specifically addressing the formula F = mk/r², where k is a negative constant indicating the attractive nature of gravity. Participants confirm that gravity acts in the negative radial direction. Additionally, the escape velocity is defined as v(initial) = √(2gR), with a recommendation to prove this using conservation of energy principles.
PREREQUISITESPhysics students, educators, and anyone interested in understanding gravitational forces and escape velocity calculations.
Gravity is an attractive force, which acts in the -r direction.hadeel said:1- F = mk/r^2 ... k is -ve value ...why ?? please in concise way
Prove it for yourself using conservation of energy.2- for escape velocity ...
v( inital) = root ( 2gR )... with proof