Hooke's Law - Axial Deformation - Strengths of Materials

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Hooke’s Law is the relationship between stress and strain within the elastic region of the stress-strain diagram. This is where in Engineering we want to be in terms of design such that we avoid any plastic deformation. A few problems involved utilizing this relationship to find the deformation in some wires and showed the usefulness of Hooke’s Law.

(0:00) Hooke’s Law – Axial Deformation
(1:00) Hooke’s Law Equation
(3:00) Axial Deformation Equation
(3:28) Problem statement: The rigid pipe is supported by a pin at A and an A-36 steel guy cable BD. If the wire has a diameter of 0.25 in, determine how much it stretches when a load of P = 600 lb acts on the pipe.
(7:43) Problem statement: The wires each have a diameter of 1/2in, length of 2ft, and are made from 304 stainless steel. Determine the magnitude of force P so that the rigid beam tilts 0.015 degrees.