Question 2095 Deck General
70% to passYou are using tackle number 4 as shown in illustration D029DG below to lift a weight. The hauling part of this tackle is bent to the weight hook (w) of tackle number 10. What is the mechanical advantage of this rig?
A
4
B
9
C
20
D
5
AI Explanation
The correct answer is C) 20. The mechanical advantage of a tackle system is equal to the number of parts of the hauling line supporting the load. In this case, the tackle number 4 has 4 parts of the hauling line supporting the load, and the tackle number 10 (which the hauling part of tackle 4 is connected to) adds another 5 parts of the hauling line. Therefore, the total mechanical advantage of this rig is 4 + 5 = 20. The other options are incorrect because they do not accurately reflect the number of parts of the hauling line supporting the load in this specific rig configuration.
Related Questions
Q4151:You are drifting in a locale where there is no current. As a rule, your vessel w...
Q2692:Fire protection regulations for towing vessels allow you to use a nonmetallic fl...
Q3859:A small fuel spillage has occurred during helicopter refueling. After the leak h...
Q2505:The best method to secure a tow line to a cleat is to _______________.
Q4325:The lightweight longitudinal moments for the DEEP DRILLER are _______________.
Ready to test your knowledge?
Take a Deck General Practice Exam
Official Resources
Pass Your Coast Guard Licensing Exams!
Study offline, track your progress, and simulate real exams with the Coast Guard Exams app