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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`

Text Solution

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The correct Answer is:
B, C, D
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Knowledge Check

  • The distance-time graph of a moving vehicle is as shown in the figure.

    A
    The speed of the vehicle is increasing with time.
    B
    The speed of the vehicle is decreasing with time.
    C
    The final speed of the vehicle is zero.
    D
    Graph is not possible.
  • Force acting on a block versus time graph is as shown in figure Choose the correct options. (g = 10 m//s^(-2))

    A
    At `t = 2 s`, force of friction is `2 N`
    B
    At `t = 8 s`, force of friction is `6 N`
    C
    At `t = 10 s`, acceleration of block is `2 ms^(-2)`
    D
    At `t = 12 s`, velocity of block is `8 ms^(-1)`
  • Find the force exerted by 5kg block on floor of lift, as shown in figure. ( Take , g=10 ms^(-2) )

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