A 12-foot steel bar with 3/8 inch-diameter was stretched to 12 feet and 2 inches. The YM of steel is 200 GigaPascal. 21. What is 12 foot in meters? . 22. What is 3/8 inch in meters? - 23. What is 2 inches in meters? 24. What is 200 GPa in Pascal? 25-26 What is the cross-sectional area of the steel bar in square meter? 27. What is the stress? 28. What is the strain? - 29. What is the equation to determine the applied force? 30. How much is the applied force? -

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Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).