Two 3.0 g spheres on 1.0 m-long threads repel each other after being equally charged, as shown…
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Question “Two 3.0 g spheres on 1.0 m-long threads repel each other after being equally charged, as shown…”
Two 3.0 g spheres on 1.0 m-long threads repel each other after being equally charged, as shown in the figure.
What is the charge q?
http://farm5.static.flickr.com/4050/4296660084_be175edea1_o.jpg
Answer
VISUALIZE
The figure above shows the free-body diagram for each point charge q.
T be the tension in each string. F represents the Coulombic force acting between two charges.
Components of force that act on the charge qare
………………….. (1)
…………………. (2)
KNOWN
Length of each string Media_tag_8$
Acceleration caused by gravity is
FIND
We have to determine the value of the charge
of each point charge.
SOLVED
The above figure shows:
charge is therefore seperated.
q is the point charge.
According to the Coulombic force between the point charges, is
………………. (3)
Divide the equations (1) and(2) to get
Conclusion
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