Does gravity flow water go faster in a 2 inch pipe or a 1/2 inch pipe?

Answer 1

it will only be more pressure in a half inch pipe if there is a force other than gravity. So the answer to your question is they travel at the same speed which, if freefalling, is 9.8m/s^-2

Answer 2

Gravity flow is calculated by the Manning's Equation, which is:

Q = A *1.486/n * R2/3 * S1/2

Where A is the area of the pipe, n is the roughness coefficient, R is the hydraulic radius and S is the slope of the pipe.

Go to this site, it explains the terms and has a calculator to find the velocity. Assume a full flowing pipe so the circumference is the wetted perimeter and an equal slope and n for both conditions

http://www.sd-w.com/civil/mannings_formula.html

Answer 3

sure, honestly. it truly is effortless physics. before each and every thing the go portion of a 2" pipe is 4xpi or about 14 sq. inches. 4 a million/4 inch pipes are about 4 x a million/8 x pi or about a million a million/2 sq. inches. besides, the outdoors portion of the interior of four a million/4 inch pipes is way more effective for a given go section than the better pipe. extra section = extra friction loss. extra go section = more effective flow. You'l have more effective stress and extra water with the better pipe.

Answer 4

More water will folw thru a 2 inch pipe, it will flow at a higher pressure thru a 1/2 inch pipe.

Answer 5

if the water source the water is leaking from a container at the top, then the pressure, since it is concentrated into a smaller area will make the water go faster in the1/2 inch tube

Answer 6

It would go faster in a 2" pipe because less FRICTION

Answer 7

norman got it right.
There is less circumference (a source of friction) per unit cross sectional area in the 2" pipe, so the AVERAGE speed will be somewhat faster.

Answer 8

The gravitational pull is the same for both

Answer 9

same