If linear density of a rod of length 3 m varies as λ = 2 + x, then the position of the centre of gravity of the rod is

Q: If linear density of a rod of length 3 m varies as λ = 2 + x, then the position of the centre of gravity of the rod is

(a) 7/3 m

(b) 12/7 m

(c) 10/7 m

(d) 9/7 m

Ans: (b)