You are on a summer overnight hike in the mountains with your older brother, Neil, who is home from college. As always, your backpacks contain all the necessary supplies including food, water, a hatchet, a first aid pouch, and sleeping gear. You also packed an extra rope, pulleys, extra tent stakes, and your cell phone. Your brother Neil is ahead of you on the steep trail and suddenly trips on a tree root, losing his footing. He slides about 40 feet down the mountainside to a ledge. He is okay, except for a sprained wrist. It is too steep for him to climb up, plus Neil says he can’t hold anything tight in his injured hand. Your first reaction would be to tie a rope around a nearby tree and throw it down to your brother so he can climb back up, but he can’t use one of his hands. By using single or double pulley systems and any other materials that you have, explain step by step how you will create a mechanical advantage to lift Neil back up to the trail and out of danger. Include a diagram of your mechanism labeling the adjacent tree as an anchor for the pulleys, Neil as a weight, the pulleys, and the direction of pull on the rope using a series of arrows. Your explanation should be about 300 words, or about one page long.