Calculating Uncertainty in Angular Resolution for Scientists

  • Thread starter Thread starter P-Jay1
  • Start date Start date
  • Tags Tags
    Uncertainties
AI Thread Summary
To calculate the experimental limit of angular resolution, the equation theta = d / D is used, with d being 0.75 ± 0.003 mm and D being 10.3 ± 0.2 m. The discussion emphasizes the importance of propagating uncertainties to determine the resultant uncertainty in theta, which should be expressed in radians. Participants recommend consulting resources on error propagation, specifically section 9 of the linked document. Questions arise about whether to add uncertainties and how to determine the largest and smallest values of theta. The conversation concludes with an acknowledgment of stress affecting comprehension but a newfound clarity.
P-Jay1
Messages
32
Reaction score
0
Hey, I'm being asked to find the experimental limit of angular resolution.

The equation is as follows: theta = d / D

where d = 0.75 \pm 0.003 mm

and, D = 10.3 \pm 0.2 m

The angular limit of resolution will be given in radians. How do I work out the resultant uncertainty?
 
Physics news on Phys.org
do you add the uncertainties?
 
What is the largest value of theta? What is the smallest value?
 
P-Jay1 said:
do you add the uncertainties?

Did you look through the document at the link I provided? In particular, section 9, "Propagation of Errors of Precision".
 
gneill said:
Did you look through the document at the link I provided? In particular, section 9, "Propagation of Errors of Precision".


Briefly. I'm extremely stressed and my ability to read and think at the same time has deteriorated. However, I see now though, so thankyou :)
 
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