Question

Three masses are placed on the x-axis: 300 g at
origin, 500 g at x = 40 cm and 400 g at x = 70 cm.
The distance of the centre of mass from the origin
is
[AIPMT (Mains)-2012]
(1) 40 cm
(2) 45 cm
(3) 50 cm
(4) 30 cm​

Answer 1

Answer:

40cm

Explanation:

xc = m1x1+m2x2+m3x3

m1+m2+m3

xc= 300(0)+500(40)+400(70)

300+500+400

xc= 48,000

1,200

xc= 40cm

=> option 1 -> (40cm) is the answer