Fluid mechanics ( help)

1. Jan 18, 2009

Lorna18

Fluid mechanics (urgent help)

i got stuck in the middle... guess i could do with some help!!

A siphon has uniform cross sectional area of 10^(-3) sq.m consider that water has no viscisity. A tank has height upto 80m. half of it contains water. the end of the siphon inside the tank is 20m above the base. the other end of the siphon fully pre-filledwith water is 30m above the base. find the instantaneous rate of flow out of water from the tank.
take g=9.8m/sec^2.

a) 14 l/sec b) 19.8 l/sec c) 28 l/sec d) no out flow, rather in flow will occur.

2. Relevant equations

3. The attempt at a solution
can't exactly understand how to approach the problem!

2. Jan 18, 2009

tiny-tim

Hi Lorna18!

Hint: if you want to use a Bernoulli's equation , draw a streamline with both ends at the same pressure.