A) 5 m
B) 3.5 m
C) 4.5 m
D) 4 m
Correct Answer: A
Solution :
The\[x-\]coordinate of centre of mass \[x=\frac{{{m}_{1}}{{x}_{1}}+{{m}_{2}}{{x}_{2}}}{{{m}_{1}}+{{m}_{2}}}\] Here, \[{{m}_{1}}=0.4\,kg,{{x}_{1}}=2m\] \[{{m}_{2}}=0.6\,kg,{{x}_{2}}=7m\] Hence, \[x=\frac{0.4\times 2+0.6\times 7}{0.4+0.6}\] \[x=5m\]You need to login to perform this action.
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