1. A boiler reserve tank pictured at right has a small round drain plug and a mercury sight glass ma- nometer attached to the bottom. The plug will fail at a hydrostatic force of 40 Newtons. Assum- ing fluids are at 20C provide the following: a. Develop a relationship between the depth of the plug (i.e., the height of wa- ter, H) and the height of the mercury, h. b. Plot h(cm) vs. H(cm) with plug depth (H) on the horizontal axis in the range of 2 to 4 meters. Provide labels and units on Mercury axes. D 2 cm H Water 50 c. Determine the manometer height, h (cm), at which the plug can be expected to fail. Plug, D=4 cm