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If E=2r^(2) then find V(r)...

If `E=2r^(2)` then find V(r)

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Given : `E=2r^(2)`
We know that : `intdv=- int vec(E).vec(dr)=- int 2r^(2) dr" "implies" "V(r)=(-2r^(3))/3+c`
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