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A mass of 1 kg is suspended by means of ...

A mass of 1 kg is suspended by means of a thread. The system is (i) lifted up with an acceleration of `4.9ms^(2)` (ii) lowered with an acceleration of `4.9ms^(-2)`. The ratio of tension in the first and second case is

A

`3:1`

B

`1:2`

C

`1:3`

D

`2:1`

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The correct Answer is:
A
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