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A 50 kg man stuck in flood is being lift...

A 50 kg man stuck in flood is being lifted vertically by an army helicopter with the help of light rope which can bear a maximum tension of 70 kg-wt. The maximum acceleration with which helicopter can rise so that rope does not breaks is `(g = 9.8 ms^(-2))`

A

4.00`ms^-2`

B

`3.92ms^-2`

C

`3.52ms^-2`

D

`3.00ms^-2`

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