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27 December, 19:48

How much work should be done to lift a 5kg brick to the height of 12m

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  1. 27 December, 20:01
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    Answer: 588 joules

    Explanation:

    Work is done when force is applied on an object over a distance (whether vertical or horizontal). It is measured in joules.

    Thus, Workdone = Force X distance

    - Vertical distance to be moved by the brick = 12 metres

    - Mass of box = 5kg

    - Acceleration due to gravity when box was lifted represented by g is a constant with value of 9.8m/s^2

    Now, recall that Force = Mass x acceleration due to gravity

    i. e Force = 5kg x 9.8m/s^2

    Force = 49 Newton

    So, Workdone = Force X Distance

    Workdone = 49 Newton X 12 metres

    Workdone = 588 joules

    Thus, 588 joules of work was done.
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