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QID - 25064 You are lifting a one-ton weight with a swinging boom. When comparing the stresses on the rig with the boom at 20° to the horizontal to the stresses when the boom is at 60° to the horizontal, which statement is TRUE? The thrust on the boom is greater at 20°.
The stress on the head block is greater at 60°.
The angle of elevation does not change the stresses in the masthead fairlead for the topping lift.
The stress on the heel block is greater at 60°.
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