Question 1604 Deck General

The correct answer is A) 1.0. The mechanical advantage of a tackle (a system of ropes and pulleys) is equal to the number of rope parts supporting the load. In the illustration D029DG, tackle number 1 consists of a single fixed pulley, which means there is only one rope part supporting the load. Therefore, the mechanical advantage of this tackle is 1.0. The other answer choices are incorrect because 2.0 would indicate a tackle with two rope parts, 0.5 would indicate an inverted tackle, and 1.5 does not correspond to the simple single pulley arrangement shown in the illustration.