Question

Several small holes are drilled into the
wall of a cylinder shaped container. The sym-
metry axis of the cylinder is vertical. The con-
tainer is lled with water up to a height of H,
and due to this, narrow beams of water ow
out of the container (perpendicularly to the
wall of the cylinder). What is the shape of the
envelope of the beams of water? (The water
beams do not form obstacles to each other,
and the water level in the container is kept
constant by relling the water.)

Answer 1