The young tree, originally bent, has been brought into the vertical position by adjusting the three guy-wire tensions to AB = 6 lb, AC = 14 lb, and AD = 16 lb. Determine the force and moment reactions at the trunk base point O. Neglect the weight of the tree. 5.0' 3.3' 5.5' 3.3' 5.5' Answers: Fo =( i i+ j+ k) Ib Mo = ( i i+ j+ i k) Ib-ft

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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.