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Two trolleys of mass m and 3m are connec...

Two trolleys of mass m and 3m are connected by a spring. They are compressed and released, they moves off in opposite direction and comes to rest after covering distances `s_1` and `s_2` respectivley. If the frictional force acting between trolley and surface is same in both cases then the ratio of distances `s_1 : s_2` is

A

`1 : 9`

B

`1 : 3`

C

`3 : 1`

D

`9 : 1`

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The correct Answer is:
C
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