Three masses are placed on the x-axis: 300 g at origin, 500g at \[x=40 – McqOptions

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1.	Three masses are placed on the x-axis: 300 g at origin, 500g at \[x=40\text{ }cm\]and 400g at\[x=70cm\]. The distance of the centre of mass from the origin is
A.	40cm
B.	45cm
C.	50cm
D.	30cm
Answer» B. 45cm

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