Consider a copper wire with cross-sectional area 4 mm?. The Young's modulus for copper is 1.1 × 1011 N/m². What force is necessary to stretch the wire by 1%? a) 3.636 × 10-15 N b) 4.400 × 103 N =) 6.400 × 107 N d) 2.750 × 1014 N e) 2.750 × 1018 N

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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).