Question

A cylinder of height 20m is completely filled with water. Find the efflux water

Answer 1

As per Bernoulli's equation  p+(1/2)ρu2 is constant.  If we apply the Bernoulli's equation at the top surface and at the bottom hole begin math size 12px style P subscript 0 space equals space P space plus space 1 half rho u squared space equals space open parentheses P subscript 0 plus rho g h close parentheses plus 1 half rho u squared end style  so we get, begin math size 12px style u space equals space square root of 2 g h end root space equals square root of 2 cross times 10 cross times 20 end root equals 20 space m divided by s end style