A body of m start falling from 2r above earth its kinetic energy whrn it is fallen to r above earth
Answers
Answered by
7
When body starts to fall towards earth's surface, its potential energy decreases so kinetic energy increases.
Increase in kinetic energy = decrease in potential energy
Final Kinetic - Initial Kinetic Energy = Initial Potential energy - Final Potential Energy
Final - 0 = −GMmR+2R−(−GMmR+R)
Final = −GMm3R+(GMm2R)
Final = (GMm6R)
Similar questions