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The centre of mass of a non uniform rod of length L whose mass per unit length `lambda` varies as `lambda =(k.X^3)/L` where K is a constant & `X` is the distance of any point on rod from its one end, is at distance (from the same end)
A. |
`4/5L` |
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B. |
`1/4L` |
C. |
`K/L` |
D. |
`(3K)/L` |