The trolley of a small hoist is supported on a horizontal beam, as shown. The maximum mass...

The trolley of a small hoist is supported on a horizontal beam, as shown. The maximum mass to be lifted is 6000 kg. The tie-back is a round rod, 33 mm in diameter. The tensile stress in the tie-back is not to exceed 170 MPa. The maximum elongation allowed for the tie-back is 2.50 mm. Determine the maximum dimension L permitted.

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