1) A 10 ft, 25 1b seesaw is balanced by a little girl (50 1b) and her father (200 1b) at opposite ends as shown below. How far from the seesaw's center of mass must the fulcrum be placed? 501b 2001b X 25160ft 2) Explain the principle of the triple beam balance used in the laboratory. 3) In Case B. how far from the pivot point could you put the 100 gram mass and still have it be balanced by the 50 gram mass on the other side of the meter stick? 4) In case D. if the hanging mass were placed at the very end of the meter stick, where would the balance point be located? 5) In Figure 3, let my=250g and r,= 30cm, and m; = 100g and r; = 40cm. If 1,=15cm, what is m