Question 2124 Deck General

The correct answer is C) 400 lbs. In a twofold purchase rigged to disadvantage, the mechanical advantage is 4:1. This means that for every 100 lbs. of force applied, the system can lift 400 lbs. of weight, as the force is multiplied by a factor of 4. The other answer choices are incorrect because: A) 200 lbs. is only the mechanical advantage for a single-fold purchase, not a twofold purchase rigged to disadvantage. B) 300 lbs. is incorrect, as the mechanical advantage for a twofold purchase rigged to disadvantage is 4:1, not 3:1. D) 500 lbs. is too high, as the mechanical advantage for a twofold purchase rigged to disadvantage is 4:1, not 5:1.