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three point charge q ,q and - q are placed at the corner of an equilateral triangle of side a . another charge q is kept at the centroid of triangle .force exerted on q is |
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Answer» Answer: 0 = 2x a
x= 2 3
x= 3
a
The net force on x axis is cancelled by the below two (−Q) charges. ∴ Force on y axis ADDS up F y
= ( 3
a
) 2
k(q)(q)
+ ( 3
a
) 2
k(q)(q)
×cos60 0 ×2 F y
= a 2
3kq 2
+ a 2
3kq 2
F y
= a 2
6kq 2
F y
= 4a 2 πε 0
2
= 2a 2 πε 0
3q 2
I think this is the answer to your question |
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