GSK Exit Exam • Set 3 Question 27 of 30
The advantage of using a purchase is that for a given size of wire rope
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Direct Answer
Option B: greater weight can be lifted
A purchase, which is a system of ropes and pulleys (blocks), provides mechanical advantage. This allows a greater weight to be lifted with less effort than would be required with a single rope, for the same size of rope.
All Options
A
The frictional forces are reduced
B
greater weight can be lifted
(Correct Answer)
C
smaller weight can be lifted
D
The same weight can be lifted
Detailed Explanation & Context
A purchase, which is a system of ropes and pulleys (blocks), provides mechanical advantage. This allows a greater weight to be lifted with less effort than would be required with a single rope, for the same size of rope.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • General Ship Knowledge (GSK).
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