2. While walking along a trail next to a long straight concrete-walled irrigation ditch you notice a rectangular platform floating close to, but not touching, the west side of the ditch. The platform remains oriented so that the long sides are parallel to the walls of the ditch, but can't touch the side of the ditch. The water in the ditch is flowing north and its flow is laminar. You can see that the platform is held in place by a cable at each end that extends down into the water, but the water is too murky for you to tell where they're anchored. But you've been studying fluid dynamics, so you figure out that the anchor point of each cable must be in which direction (other than below) from where it's attached to the floating platform? (Hints: There will be two effects from the water's flow, so be sure to consider both. Think about where, relative to the platform, the flow must be fastest.) water flow a) no direction (directly below the platform) b) north c) northwest d) west e) southwest f) south g) southeast h) east i) northeast
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
Please show complete, organized, and correct work for each question. You’re welcome to use your book and notes, but no calculators.
2. While walking along a trail next to a long straight concrete-walled irrigation ditch you notice a rectangular platform
floating close to, but not touching, the west side of the ditch. The platform remains oriented so that the long sides are
parallel to the walls of the ditch, but can’t touch the side of the ditch. The water in the ditch is flowing north and its
flow is laminar. You can see that the platform is held in place by a cable at each end that extends down into the water,
but the water is too murky for you to tell where they’re anchored. But you’ve been studying fluid dynamics, so you
figure out that the anchor point of each cable must be in which direction (other than below) from where it’s attached
to the floating platform? (Hints: There will be two effects from the water’s flow, so be sure to consider both. Think about where,
relative to the platform, the flow must be fastest.)
a) no direction (directly below the platform)
b) north
c) northwest
d) west
e) southwest
f) south
g) southeast
h) east
i) northeast
Correct answer is option (d) i.e. the direction will be east
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