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Problem
Problem
Three identical small balls, each of mass
0.1
0.1
0.1
g, are suspended at one point on silk thread having a length of
l
=
20
l = 20
l
=
20
cm. What charges should be imparted to the balls for each thread to form an angle of
α
=
30
∘
\alpha = 30^\circ
α
=
3
0
∘
with the vertical?
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