Physics
Mechanics
Easy
Question
The intensity of gravitational field at a point situated at a distance of 8000 km from the centre of the earth is 6 N / kg. The gravitational potential at that point is - (in Joule/ kg)
The correct answer is:
When body starts falling toward earth's surface its potential energy decreases so kinetic energy increases.
Increase in kinetic energy = Decrease in potential energy
Final kinetic energy - Initial kinetic energy = Initial potential energy - Final potential energy
Final kinetic energy – 0
Final kinetic energy 
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