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A block is hanging with a light string i...

A block is hanging with a light string in a lift as shown in the figure (a). The lift is moving in upward direction and its speed time graph is plotted as shown in the figure (b) : (take `g = 10 m//s^(2)`)

A

Tension in the rope at `t = 1` sec is `100 N`

B

Tension in the rope at `t = 3` sec is `240 N`

C

Tension in the rope at `t = 5` sec is `200 N`

D

Tension in the rope at `t = 1` sec is `200 N`

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B, C, D
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