The drawing shows an A-shaped stepladder. Both sides of the ladder are equal in length. This ladder is standing on a frictionless horizontal surface, and only the crossbar (which has a negligible mass) of the A keeps the ladder from collapsing. The ladder is uniform and has a mass of 20.0 kg. Determine the tension in the crossbar of the ladder.
Chapter 12: The Violin 12.1 Construction of the Violin 1. The neck is made of maple. 2. The playing tension of each string varies from 40 to 90 N. 3. In the middle of body of the violin, a bridge supports the strings. 4. An inset narrow decorative edge, called purfling, runs around the edge of the spruce top and provides some protection against cracks originating at the edge. a. It allows the top to flex more independently of the rib of the structure. 5. Perhaps the most sophisticated aspect of the violin’s composition is the structure of the body. a. The plates (both top and back) are sculpted precisely in order to achieve