(a) Suppose that we fix one node in a planar structure and put a second node on...

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(a) Suppose that we fix one node in a planar structure and put a second node on a roller. Does the structure admit any rigid motions?
(b) How many rollers are needed to prevent all rigid motions in a three-dimensional structure? Are there any restrictions on the directions of the rollers?
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Applied Linear Algebra

ISBN: 978-0131473829

1st edition

Authors: Peter J. Olver, Cheri Shakiban

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