# Maximal kinetic energy due to gravitational attraction

Two related questions:

1. Small object of mass $m$ is falling into the supermassive black hole of mass $M$. What is the maximal kinetic energy can be acquired by the small object, from the point of view of an observer whose frame of reference is at rest near event horizon? Can it exceed $(M+m)c^2$?

2. Two small black holes of equal mass $M$ are attracted each other. What is the maximal kinetic energy can be acquired by each black hole due to gravitational attraction, from the point of view of an observer between them?

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 what do you mean by "rest near the event horizon" - Is the observer influenced by gravitational field..? – Ϛѓăʑɏ βµԂԃϔ Aug 29 '12 at 5:06 @Crazy Buddy, it should be an opposite equal force against the gravitational force to support an observer at rest. – voix Aug 29 '12 at 18:43