An elevated water tower is used to supply water to a city. to make water available at a pressure of 400 kpa at a ground level location within the city, what should be the height of water surface inside the tower? at what absolute pressure water will be available at another location which is 20 m below the first one?

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.