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Relying on his knowledge of the gravitational field (as it was

discussed in the preceding section), the man in the chest will

thus come to the conclusion that he and the chest are in a

gravitational field which is constant with regard to time. Of

course he will be puzzled for a moment as to why the chest does

not fall in this gravitational field. just then, however, he

discovers the hook in the middle of the lid of the chest and the

rope which is attached to it, and he consequently comes to the

conclusion that the chest is suspended at rest in the

gravitational field.