How Does Water Pressure Affect the Initial Velocity in Projectile Motion?

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SUMMARY

This discussion focuses on the relationship between water pressure and the initial velocity of water in projectile motion, specifically through a hose. The user aims to investigate how varying the pressure at the tap affects the velocity of water exiting the hose, which can be measured using a pressure gauge. The consensus is that increased water flow correlates with higher exit velocity, prompting the need for calculations or measurements to quantify this relationship.

PREREQUISITES
  • Understanding of basic physics principles, particularly projectile motion.
  • Familiarity with fluid dynamics concepts, including flow rate and pressure.
  • Knowledge of measurement tools such as pressure gauges.
  • Ability to conduct experiments and analyze data effectively.
NEXT STEPS
  • Research the Bernoulli's principle and its application in fluid dynamics.
  • Learn how to calculate exit velocity using the equation of motion for fluids.
  • Explore methods for measuring flow rate and its impact on velocity.
  • Investigate the effects of launch angle on projectile motion in fluid dynamics.
USEFUL FOR

Students conducting experiments in physics, educators teaching fluid dynamics, and anyone interested in the practical applications of projectile motion principles.

Bucko
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[mod note: post moved into homework forum, so template is absent]

G'day,

I have an open ended investigation to do for school, and was wanting to do an experiment involving the motion of water from a hose, as this would give me a good parabolic curve to view. I wish to examine two independent variables. First one is angle of launch - pretty easy. I'm having trouble with a second one through.

I was wondering whether i could change the pressure of the actual tap/ hose, and whether or not this has any correlation to initial velocity, as in can I work out the initial velocity if I measure the pressure of the tap using a pressure gauge, for example.

Any help on the topic would be much appreciated. Cheers.
 
Last edited by a moderator:
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Hi Bucko. :welcome:

Sure, the more water that passes through the hose per second, the faster its velocity. So the problem becomes: how to calculate or measure that exit velocity.

Any ideas?
 

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