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Three masses are placed on the x-axis : ...

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.

A

40 cm

B

45 cm

C

50 cm

D

30 cm

Text Solution

Verified by Experts

The correct Answer is:
A
`= (300 (0) + 500 (40) +400 (70))/(300 + 500 +400)`
` = (20000+2800)/(1200) = 48000/1200`
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