Question: 7 - 1 1 5 . The 8 0 - m - long chain is fixed at its ends and hoisted at its midpoint B

7-115. The 80-m-long chain is fixed at its ends and hoisted at its midpoint B using a crane. If the chain has a weight of 0.5kNm, determine the minimum height h of the hook in order to lift the chain completely off the ground. What is the horizontal force at pin A or C when the chain is in this position? Hint: When h is a minimum, the slope at A and C is zero.
7-115. The 80-m-long chain is fixed at its ends and hoisted

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