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two spheres carrying charge q are hanging from a same point of suspension with the help of threads of length 1 m in a space free from gravity . the distance between them is?
13 years ago

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bobpursley
the downward force on each is mg.

from the vertical, then the angle to one string Theta is given by
kQQ/r^2mg=tanTheta

but sinTheta=r/2L

assuming small angles, sinTheta appx=tantheta

r/2L=kQQ/r^2mg
r^3=kQQL/mg

check that
13 years ago

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