The drawing shows a wire tooth brace used by orthodontists. The topmost tooth is protruding slightly, and the tension in the wire exerts two forces Fland F2 on |this tooth with angle 20 in order to bring it back into alignment. If the forces have the same magnitude of 10N, what is 1.the magnitude of the net force exerted on the tooth by these forces 2.Young's modulus of wire if diameter of wire is 1mm and length is 20cm and after 1moth the length of wire become 20.2cm.

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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).