A steel rod of 2 cm diameter and 5 m long is subjected to an axial pull of 3000 kg. if E = 2.1 x 106 kg/cm² the elongation of rod will be- 1. 2.275 cm 2. 0.2275 cm 3.0.02275 cm 4. 2.02275 cm

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Q: w = 7 kips/ft -w = 3 kips/ft B L = 22' – 0"|

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A: The given figure is shown below:

Laws of Equilibrium

A body is said to be in equilibrium if the system of forces acting on the body tends to keep the body at rest, in other words, there is no translation motion or net torque on the body. Under such conditions, the equilibrium conditions are to be applied to analyze the condition. The branch of mechanics that deals with this condition is known as 'statics'. Under equilibrium, there are no net forces on the body.