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The uniform bar OC of length L pivots freely about a horizontal axis through O. If the spring of modulus k is unstretched when

The uniform bar OC of length L pivots freely about a horizontal axis through O. If the spring of modulus k is unstretched when C is coincident with A, determine the tension T required to hold the bar in the 45 degree position shown. The diameter of the small pulley at D is negligible. L/2 45 30 L/2

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