- #1
Circuits (Nodal and loop anal. finding current through branch)
AI Thread Summary
The user is attempting to solve for the short-circuit current (isc) and believes their equations are correct, expecting isc to equal 6mA but calculating it as 0mA. There is a suggestion that the user's choices for currents i1 and i2 may not be optimal for the analysis. Clarification is provided that Ix should equal i2 and that the relationship between the currents can be expressed as 2Ix = i2 - i1. The discussion highlights the importance of correctly setting up equations in circuit analysis to achieve accurate results.
- #2
SammyS
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That's a rather difficult image to read: sideways and illuminated through a partially open blind.Miike012 said:
Your choices for i1 & i2 are not the most convenient.
It looks to me like:
Ix = i2 = isc
and
2Ix = i2 - i1 .
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...
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...
This problem is two parts. The first is to determine what effects are being provided by each of the elements - 1) the window panes; 2) the asphalt surface. My answer to that is
The second part of the problem is exactly why you get this affect.
And one more spoiler:
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