Question

Three particles of masses 1 kg, 2 kg and 3 kg are situated
at the comers of an equilateral triangle of side b in the x-y
plane with mass 1 kg at the origin and 2 kg on the x-axis.
The coordinates of the centre of mass are
7
,​

Answer 1

Answer:

7/12

Explanation:assume 1 kg at origin

then find the co ordinates of the three particles

co ordinates of 1st particle(0,0)

second particle(b,0)

third particle(b/2,√3/2×b)

them com=m1x1+m2x2+m3x3/m1+m2+m3

that=(0+2b+3/2×b)/6b

=(7b/2)/6b

=7/12