Answer Happy

Suppose water is leaking from a tank through a circular hole of area A, at its bottom. When water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to CA√2gh, where c (0 < c < 1) is an empirical constant. A tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (Assume the removed apex of the cone is of negligible height and volume.) (a) Suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. The differential equation governing the heighth in feet of water leaking from a tank after t seconds is 5 6h3/2 In this model, friction and contraction of the water at the hole are taken into account with c = 0.6, and g is taken to be 32 ft/s2. See the figure below. dh ar 8 ft Aw 20 ft circular hole If the tank is initially full, how long will it take the tank to empty? (Round your answer to two decimal places.) 14.31 ✔ minutes (b) Suppose the tank has a vertex angle of 60° and the circular hole has radius 4 inches. Determine the differential equation governing the heighth of water. Use c = 0.6 and g = 32 ft/s². 1.56816 ₂ (7) X If the height of the water is initially 8 feet, how long will it take the tank to empty? (Round your answer to two decimal places.) 1.34 X min