A horizontal pipe line carries water in a streamline flow. At a point along the pipe where the cross-sectional area is 10 cm^(2) the velocity of water ist m/s and the pressure is 2000 Pa. What is the pressure at another section where the cross-sectional area is 5 cm^(2) ?

A horizontal pipe line carries water in a streamline flow. At a point

1.	A horizontal pipe line carries water in a streamline flow. At a point along the pipe where the cross-sectional area is 10 cm^(2) the velocity of water ist m/s and the pressure is 2000 Pa. What is the pressure at another section where the cross-sectional area is 5 cm^(2) ?
Answer» <P> Solution : According to equation of continuity `A_(1)V_(1)=A_(2)V_(2),V_(2)=10//5xx1=2m//s` Now according to Bernouli,s equation ,`P_(1)+(1)/(2)rhoV_(1)^(2)=P_(2)+(1)/(2)rhoV_(2)^(2)` (horixonatial PIPE) `2000+(1)/(2)10^(3)(I)^(2)=O_(2)+(1)/(2)(10^(3))(2^(3)) THEREFORE P_(2)=500 pa`