Question 1705Deck General70% to pass
Disregarding friction, what is the mechanical advantage of a twofold purchase when rove to disadvantage?
AI Explanation
The correct answer is C) 4.
When a twofold purchase is rove to disadvantage, the mechanical advantage is 4. This is because in a twofold purchase, there are two parts of the rope supporting the load, and when roved to disadvantage, the mechanical advantage is equal to the number of parts of the rope supporting the load, which is 4.
The other options are incorrect because: A) 2 is the mechanical advantage of a single-fold purchase, B) 3 is the mechanical advantage of a threefold purchase, and D) 5 is the mechanical advantage of a fourfold purchase.
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