Physics

Problem

The centre of mass of a non uniform rod of length

L

whose mass per unit length varies as

\rho = kx^2/L

(where

k

is a constant and

x

is the distance measured from one end) is at the following distance from the same end. (A)

3L/4

(B)

L/4

(C)

2L/3

(D)

L/3