Three identical uniform rods of the same mass and length are arranged in  plane as shown in fig. A fourth uniform rod of mass 3  has been placed as shown in the  plane. What should be the value of the length of the fourth rod such that the centre of mass of all the four rods lie at the origin?

a)

3

b)

2

c)

(   +1)/3

d)

(2   +1)/3

Question ID - 100215 | SaraNextGen Answer

Three identical uniform rods of the same mass and length are arranged in  plane as shown in fig. A fourth uniform rod of mass 3  has been placed as shown in the  plane. What should be the value of the length of the fourth rod such that the centre of mass of all the four rods lie at the origin?

a)

3

b)

2

c)

(   +1)/3

d)

(2   +1)/3