Part A The Achilles tendon is attached to the rear of the foot as shown in the figure. When a person FT Achilles tendon FB Leg bone D- Ball of foot (pivot point) elevates himself just barely off the floor on the "ball of one foot," estimate the tension Fr in the Achilles tendon (pulling upward). Assume the person has a mass of 76 kg and D is twice as long as d. Express your answer to two significant figures

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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).