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Deck : Deck General - 334/5076 |
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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? |
A) The thrust on the boom is greater at 20°. |
B) The stress on the head block is greater at 60°. |
C) The angle of elevation does not change the stresses in the masthead fairlead for the topping lift. |
D) The stress on the heel block is greater at 60°. |
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