Confused about the Question asked (bernouillis equation)

  • Thread starter Thread starter lc99
  • Start date Start date
  • Tags Tags
    Confused
AI Thread Summary
The discussion centers on clarifying whether the calculation pertains to water falling outside of a pipe rather than within it. The participant seeks confirmation on their assumption that the speed function applies to water outside the pipe. They note that this assumption leads to a correct answer. The response confirms that the focus is indeed on water falling outside the pipe. This clarification is crucial for accurately solving the problem using Bernoulli's equation.
lc99
Messages
161
Reaction score
3

Homework Statement



upload_2018-5-6_22-26-23.png

Homework Equations

The Attempt at a Solution


Are we calculating the water that is falling when it is outside of the pipe. Not within the pipe? I just want to clarify. Because if i assume that the function of the speed is out of the pipe, then i get a correct answer...
 

Attachments

  • upload_2018-5-6_22-25-57.png
    upload_2018-5-6_22-25-57.png
    39.3 KB · Views: 433
  • upload_2018-5-6_22-26-21.png
    upload_2018-5-6_22-26-21.png
    27.3 KB · Views: 447
  • upload_2018-5-6_22-26-23.png
    upload_2018-5-6_22-26-23.png
    27.3 KB · Views: 644
Physics news on Phys.org
lc99 said:
Are we calculating the water that is falling when it is outside of the pipe.
Yes.
 
  • Like
Likes lc99
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...

Similar threads

Back
Top