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Two small masses, A and B, are positioned, far from M, such that the distance between them is d. Further, A and B are parallel to a tangent on the surface of M.

When masses A and B are released (t=0) they will start to fall toward M.

**Q1:**Will an observer falling with A and B see the distance (d) between them shrink as a function of t (as they approach M)? That is, are the geodesics followed by A and B parallel or not?

If the answer is that the geodesics are not parallel then the observer should conclude there is a force (or pseudo-force) acting to push A and B closer together.

**Q2:**If this is true then is it not possible to build a machine which could tell an observer in an 'elevator' whether they are falling in a gravitational field or they are accelerating? Doesn't this violate the strong form of the EP? I would rather think it doesn't but I can't see where my reasoning is wrong.