6. The rigid bar ABC of negligible weight is suspended from three aluminum wires, each of cross-sectional area 0.3 in.?. Before the load P is applied, the middle wire is slack, being 0.2 in. longer than the other two wires. Determine the largest safe value of P if the working stress for the wires is 12 ksi. Use E = 10 x 106 psi for aluminum. %3D 6011 4 t

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.