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Two blocks of masses 2 kg and 4 kg are h...

Two blocks of masses 2 kg and 4 kg are hanging with the help of massless string passing over an ideal pulley inside an elevator. The elevator is moving upward with an acceleration `(g)/(2)`. The tension in the string connected between the blocks will be (Take `g=10m//s^(2)`).

A

40 N

B

60 N

C

80 N

D

20 N

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Knowledge Check

  • If the elevator in shown figure is moving upwards with constant acceleration 1 ms^(-2) , tension in the string connected to block A of mass 6 kg would be ( take, g =10 ms^(-2) )

    A
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    B
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    C
    54 N
    D
    42 N

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    A
    `(3m_(1)m_(2))/(m_(1)+m_(2))g`
    B
    `(m_(1)+m_(2))/(4m_(1)m_(2))g`
    C
    `(2m_(1)m_(2))/(m_(1)+m_(2))g`
    D
    `(m_(1)m_(2))/(m_(1)+m_(2))g`

  • Two blocks of masses of 40 kg and 30 kg are connected by a weightless string passing over a frictionless pulley as shown in the figure.

    A
    `0.7"ms"^(-2)`
    B
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    C
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    D
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