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Using a rope , a block of mass M is lowe...

Using a rope , a block of mass M is lowered through a height d with a uniform vertical acceleration `g/4`. How much work was done on the block ?

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The correct Answer is:
`3/4 Mgd`
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Knowledge Check

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

    A
    Mgx
    B
    `1/2 Mgx^2`
    C
    `1/2 Mgx`
    D
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  • Two scooters start at an interval of 1 min between them, each moving with a uniform acceleration of 0.4 m//s^(2) . How much later the distance between them would be 4.2 km?

    A
    195s
    B
    205s
    C
    175s
    D
    250s

  • There is a hemispherical bowl of radius R. A block of mass m slides from the rim of the bowl to the bottom. The acceleration of block at the bottom is

    A
    2g, upwards
    B
    g, downwards
    C
    zero
    D
    2g, downwards

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