Question: A 15-m-long, vertical pole supports a 500-N antenna at the top. Four steel guy wires are attached to the pole at an elevation of

A 15-m-long, vertical pole supports a 500-N antenna at the top. Four

A 15-m-long, vertical pole supports a 500-N antenna at the top. Four steel guy wires are attached to the pole at an elevation of 12 m. The angle between the guy wires and the pole is 30 and they oppose each other in pairs at the point of attachment. The total load on the pole must not exceed 20 kN. What is the maximum tension allowed in each guy wire? If they have a 12-mm-dia, what is the stress in a cross-section far from either end and how much must each wire stretch to achieve the required load?

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