What is the tension supporting one ball?

AI Thread Summary
The discussion revolves around calculating the tension supporting one of two identical conducting balls, each weighing 25.0g and hanging at a 45-degree angle from the vertical. The user expresses confusion after attempting to apply trigonometry and creating a free body diagram but arriving at an incorrect answer. Other participants emphasize the need for the original poster to share their calculations to identify the error. The conversation highlights the importance of clear communication in problem-solving. Overall, the thread focuses on resolving the tension calculation for the hanging balls.
Joshua May
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Homework Statement


Two identical conducting balls, b1 and b2, each with a mass of 25.0g
both are hanging at 50.0cm at an angle of 45Degrees from the vertical each.

Homework Equations


Fg = mg
Fe = kq/r^2
Ft = ?

The Attempt at a Solution


I made a free body diagram and am confused on what to do next... I attempted trigonometry but I get the wrong answer...
 
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Joshua May said:
I attempted trigonometry but I get the wrong answer...
What do you get as answer, what do you want to get?

We can't tell what went wrong if you do not show what you did.
 
Edit / Redundant post .
 

Thread 'Errors and significant figures'

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...
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Thread 'A cylinder connected to a hanging mass'

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...
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