ISBN: | 978-5-5093-0159-9 |
High Quality Content by WIKIPEDIA articles! Weightlessness, or an absence of `weight`, is in fact an absence of stress and strain resulting from externally applied forces, typically contact forces from floors, seats, beds, scales, and the like. Counterintuitively, a uniform gravitational field does not by itself cause stress or strain and a body in free fall in such an environment feels weightless.