Before beginning Part III, request the TA to weigh the meterstick and determine your percent difference. Part III - Estimating the Mass of the Unknown using a Single Data Point Students may not use a scale or balance for Part I, Part II, Part III, or Part IV to weigh the unknown or the meterstick. Hints: 1. Place the unknown mass and a known mass on opposite sides of the fulcrum. 2. Maximizing the length of the lever arms will result in less error. 3. Position the fulcrum and meterstick diagonally on a corner of the bench such that items can be hung on both sides of the meterstick. Briefly explain how the mass of the meterstick can be made irrelevant based on the selection of the position of the fulcrum and the chosen pivot point. (5 points)