Question 610Deck General70% to pass
With a given load on the cargo hook, the thrust on a cargo boom _______________.
AI Explanation
The correct answer is B) increases as the angle to the horizontal increases.
The thrust on a cargo boom with a given load on the cargo hook increases as the angle to the horizontal increases. This is because as the boom is raised, the vertical component of the tension in the boom increases, resulting in a greater thrust or load on the boom. Conversely, as the boom angle decreases, the vertical component of the tension decreases, reducing the thrust on the boom.
The other options are incorrect because: A) the thrust actually increases as the angle increases, not decreases; C) the thrust is not least at 45 degrees and does not increase as the boom is raised or lowered; and D) the thrust is greatest at 90 degrees (straight up), not 45 degrees, and decreases as the boom is lowered.
Related Questions
#608 What is required to be stenciled at the heel of a cargo boom? #609 The fitting that allows a boom to move freely both vertically and laterally is called the _______________.#611 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? #612 Where are the test certificates, for wire rope used as cargo runners, and loose gear certificates usually maintained? #613 In relation to cargo gear, what does "SWL" mean?