Tom Roberts wrote:

> Govindan Govindan wrote: 
>> When a mass falls under gravity where from it gets energy? 
> You have to keep your theoretical context clear. 
> In the context of Newtonian mechanics, the falling object does not "get" 
> any energy. It does trade kinetic energy with gravitational potential 
> energy, but the total energy of the object remains constant.

Not really. As it falls, as in falling off the leaning tower,
potential energy increases at the same time as kinetic energy
increases.

Continuous orbital falling is still another problem.

The question is cute. You're going to have to work harder
to answer it.

> In the context of GR the question does not make sense, as "energy" in 
> the sense you use it is not well defined.

However the question wasn't framed specifically in the context
of GR eve though this is predominantly a relativity newsgroup.

Billy X