(Solid Mechanics) For a deep-diving submersible:
(a) Explain why the pilot sphere is designed as a spherical vessel, not cylindrical or other shapes, from the mechanics perspectives.
(b) A recently demonstrated deep-sea diver (picture) is a soft robot, made of elastomers and gels. Please comment why the soft material suffice the use despite the softness.
Extracted text: The international journal ofscience/4 March 2021 nature DEEP-SEA DIVER Self-powered soft robot mimics fishtoexplore extremedepths of the ocean War of words The power and pitfalls Tools, rules and of Als that can write likehumans Out on a limb Geneticanalysis reveals isolatedevolutionof Coronavirus rewands needed to speed variant tracking dire wolves