Monday
April 27, 2015

Homework Help: Physics

Posted by Alfred on Sunday, February 6, 2011 at 6:52pm.

A fountain has a cylinder with holes placed on the side at heights of 1 m and 2 m. The water level is the cylinder is kept at a height of 3 m by an input type. The water emerges from the holes and strikes the fountain pool at some distance x.

a. What distance, x, does the water from the top hole strike the surface?

b. What distance, x, does the water from the bottom hole strike the surface?

c. If both tubes are 2 cm in diameter, at what rate must the input pipe supply water?

I'm not sure if the top of the cylinder is exposed to the air but I'm assuming it is because the problem doesn't give me the pressure of the water from the input pipe. There's a picture but I can't link it to the site. I'll try to draw it using text.

I tried that using torricelli's law (v = sqrt(2gh)) and with some projectile motion (t = vh/9.81) and x = VT but I couldn't get the right answer.

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