Question 2099 Deck General

The correct answer is B) 20. The mechanical advantage of a tackle system is determined by the number of rope parts supporting the weight. In this case, the tackle number 10 has 10 rope parts supporting the weight, which results in a mechanical advantage of 10. Since the hauling part of tackle number 10 is bent to the weight hook (w) of tackle number 4, the overall mechanical advantage of the rig is doubled, resulting in a mechanical advantage of 20. The other options are incorrect because: A) 13 is incorrect as it does not account for the doubling of the mechanical advantage. C) 9 is incorrect as it does not consider the full mechanical advantage of tackle number 10. D) 24 is incorrect as it overestimates the mechanical advantage by incorrectly counting the rope parts.