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A block of 'm' is lowered with the help ...

A block of 'm' is lowered with the help of a rope of negligible mass through a distance 'd' with an acceleration of `g//3`. Find the work done by the rope on the block ?

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To solve the problem of finding the work done by the rope on a block of mass \( m \) that is being lowered with an acceleration of \( \frac{g}{3} \) through a distance \( d \), we can follow these steps: ### Step 1: Identify the Forces Acting on the Block The block experiences two main forces: - The gravitational force acting downward, which is \( mg \). - The tension \( T \) in the rope acting upward. ### Step 2: Apply Newton's Second Law ...
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Knowledge Check

  • A block of mass m is kept on a platform Platform starts moving upwards with an acceleration of g/2 . Find the work done by the normal force on the block in the first one second.

    A
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    B
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    C
    `(3mg^2)/8`
    D
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    A
    `(Mgd)/(4)`
    B
    `-(Mgd)/(4)`
    C
    `(3Mgd)/(4)`
    D
    `-(3Mgd)/(4)`

  • A mass M is lowered with the help of a string by a distance h at a distance acceleration g//2 . The work done by the string will be

    A
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    B
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