"Strongman" example for tension question This is the question: When the strongman suspends the 10 lbs telephone book with the rope held vertically, the tension in each strand of the rope is 5 lbs. If the strongman could suspend the book from the strands pulled horizontally, the tension in each strand would be how much? A picture of it is at this website: http://www.physics.uwo.ca/ugrad/p021/lectures/p021_lec12.pdf with a picture of a guy holding a textbook. Any answers? And reasons for the answers? Thanks!