A hiker who has broken his forearm rigs a temporary sling using a cordstretching from his shoulder to his hand. The cord holds the forearmlevel and makes an angle of 40.0° with the horizontal where it attachesto the hand. Considering the forearm and hand to be uniform, with atotal mass of 1.30 kg and a length of 0.300 m, find (a) the tension inthe cord and (b) the horizontal and vertical components of the force, f>,exerted by the humerus (the bone of the upper arm) on the radius andulna (the bones of the forearm).

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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).