Energy of a mass orbiting a black hole at distance r

[zzzaaaappp]

I have a question about black holes and energy but have no idea what to do. if someone could just point me in the right direction.

the question asks to consider a mass spiraling into a black hole, starting with energy E=0 at infinity. I have to determine E of the object when orbiting the black hole at distance r classically. I'm just stuck right now, not sure what is wrong.

 

[ideasrule]

The kinetic energy E, or the total energy? The total energy is trivial: because of the conservation of energy, total energy is 0, just as it was when it was at infinity.