Change in gravitational energy

  • Thread starter denian
  • Start date
here's a question.

a body of mass m at a surface of the Earth is brought to a point a distance 2R ( R = radius of the Earth ) from the centre of the Earth.

what is the change in gravitational energy of the body. will the gravitational energy of the body increased or decreased?


Science Advisor
Homework Helper
What do you mean by the "gravitational energy" of a body? The gravitational potential energy?

The potential energy changes, in moving from R to 2R, by the work done to move the mass: the integral (from R to 2R) of -GmM/r2 dr= (GmM)/R.

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving