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How is a rectangular prism and a cylinder different?
A rectangular prism has a rectangular cross section whereas a cylinder has a circular cross section
Moment of inertia is a cross sectional property that gives the engineer an indication of the stiffness of a particular shape value can used to?
find the strength of the member subject to bending or shear. Moment of inertia is used to find radius of gyratia or flexural regidity so that member strength flexural stress is found
What has a circular cross section when the cross section is taken parallel?
A cylinder has a circular cross section that is parallel to its base.
Why was arches and triangles used in making a bridge?
Introduction of Arches reduces the bending moment at cross sections due to presence of horizontal force at the support whenever bridge is loaded and thus requirement of cross section is lesser. When triangles are easy to propagate and can have tension/compression only if used as 2-point member in bridges (forces acts only the end of any member not in between), Due to absence of bending moment it also reduces the cross-section requirement. Therefore, if we introduce arches and triangles cross section requirements of each small member get reduced.
What type of cross section is preferred for a crane hook?
trapezoidal cross section
