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- How stress and strain distribute in an elastic body when load is applied on its cross sectional area.Use integration in plane areas.Suppose that 3 of work is needed to stretch a spring from its natural length of 30 cm to a length of 45 cm. How much work is needed to stretch the spring from 35 cm to 40 cm- 1J O 2.08 J 021 O 1.04)
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- A stream of water flowing horizontally with a speed of 15ms- gushes out of a tube of cross-sectional area 10-2m? , and hits a vertical wall nearby. What is the force exerted on the wall by the impact of water, assuming it does not rebound?When a particle is located a distance feet from the origin, a forceof x sq + 2x pounds acts on it. How much work is done in moving it from x =1 to x = 3?How can you use line integrals to find the centers of mass of springs or wires? Explain