Go Back   Physics Help Forum > High School and Pre-University Physics Help > Thermodynamics and Fluid Mechanics

Thermodynamics and Fluid Mechanics Thermodynamics and Fluid Mechanics Physics Help Forum

Like Tree3Likes
  • 1 Post By Woody
  • 2 Post By oz93666
Reply
 
LinkBack Thread Tools Display Modes
Old Sep 23rd 2019, 06:37 AM   #1
Junior Member
 
Join Date: Sep 2019
Posts: 1
Moving garden hose - why does the water travel shorter distance

We all know a garden hose. Keeping is stationary it has a certain throw length based on nozzle exit velocity and angle of the nozzle. If you start swinging/rotating the hose e.g. in the horizontal plane, then the throw length decreases significantly - but what are the physics behind this and can it be calculated?

Regards
Bo
boyebusk is offline   Reply With Quote
Old Sep 23rd 2019, 02:50 PM   #2
Senior Member
 
Woody's Avatar
 
Join Date: Jun 2016
Location: England
Posts: 1,060
I can't say I have noticed the effect you describe.
I can only think that the hose must be kinking,
or at least you are creating bends in the hose that are sharp enough to restrict the flow.

But this is just a guess.
topsquark likes this.
__________________
~\o/~
Woody is offline   Reply With Quote
Old Sep 24th 2019, 07:00 AM   #3
Senior Member
 
Join Date: Apr 2017
Posts: 513
Your observations must be out ....

In a rotating hose , in addition to the usual water pressure , there is also an extra centrifugal force giving the water more pull .... It's the same as if you were to lower the hose down an (empty) well , gravity would pull the water out quicker ....

In the case where you were rotating the hose rapidly above your head you are doing a lot of work .... More than if the hose was frozen and no water was exiting ...

In both cases you are doing work against air resistance , if a frozen hose that's all

But in a non frozen hose water is exiting and you have to work harder
topsquark and neila9876 like this.
oz93666 is offline   Reply With Quote
Reply

  Physics Help Forum > High School and Pre-University Physics Help > Thermodynamics and Fluid Mechanics

Tags
distance, garden, hose, jet, moving, shorter, travel, water



Thread Tools
Display Modes


Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
Time Travel philipishin Philosophy of Physics 0 Nov 21st 2016 10:30 PM
water in the hose ling233 Advanced Mechanics 7 Jan 24th 2016 07:58 AM
two balls placed a distance apart, what speed must they travel to just miss hapflir Kinematics and Dynamics 1 Sep 13th 2011 02:45 PM
why does the water flows faster when we put a finger in the garden hose? alternative Thermodynamics and Fluid Mechanics 2 Oct 7th 2010 08:50 AM
hp required 11 ft hose charter504 Kinematics and Dynamics 0 Nov 1st 2008 04:13 PM


Facebook Twitter Google+ RSS Feed