Coulombs Law and Electric Charges

AI Thread Summary
A charge of 7.00 mC is positioned at each corner of a square with sides measuring 0.80 m, and the discussion revolves around calculating the force on each charge. The problem presents challenges in determining the net force, particularly for one of the charges. Participants suggest leveraging the symmetry of the square to simplify the calculations, noting that the forces acting on each charge are equivalent in direction and magnitude. Understanding the geometry, such as the properties of an equilateral triangle, is highlighted as beneficial for solving the problem. Overall, the conversation emphasizes the importance of symmetry in electric charge interactions.
polarized
Messages
6
Reaction score
0
Likewise, this similar problem also has me stumped
A charge of 7.00 mC is placed at each corner of a square 0.80 m on a side. Determine the magnitude of the force on each charge.

Any help would be greatly appreciated!
 
Last edited:
Physics news on Phys.org
OMG,this is funny... :smile: :smile: :smile: :smile: :smile:

Do you know what an equilateral triangle is?

Daniel.
 
I'm insulted.

Yes, I know what an equilateral triangle is. It has three sides of equal length, and all three angles are 60 degrees. As I stated, I found the net force on two of the points, but Q(1) is giving me issues. Obviously the way I'm trying is wrong, so I'd like help, thank you.
 
You deleted the problem.Anyway,since you know what a equilateral triangle is,u might use the fact that the problem is symmetric (actually the geometry) so the directions of the forces are equivalent.If the charges were all 3 equal,then the problem would b solved if u managed to find the net foce acting only on one angle,since on the other two is practically the same,in modulus,of course.

Daniel.
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Find the magnitude of the electric force from 3 charges at vertices of a cube
Replies
17
Views
2K
Discontinuity in an Electric line of force
Replies
12
Views
2K
Gauss' law and Faraday cage problem
Replies
10
Views
2K
Coulomb's law to find electric field for charge density function
Replies
11
Views
1K
Point charge with very thin metal sheet along a spherical surface
Replies
21
Views
2K
I Thought I Understood Gauss' Law (Sheets)
Replies
26
Views
2K
Can a dipole be modeled as a point charge?
Replies
10
Views
512
Charge on inner/outer surfaces of two large parallel conducting plates
Replies
11
Views
3K
Electric field due to charges between 2 parallel infinite planes
Replies
9
Views
138
Using Gauss' Law to find the field at a point
Replies
6
Views
2K

Hot Threads

Recent Insights

Back
Top