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17 March, 18:08

How much work do you do when you lift a 15-kg box to a height of 5.0 m? 75 J

735 J

980 J

735 lb

147 N

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Answers (1)
  1. 17 March, 18:30
    0
    735 J

    Explanation:

    mass of box, m = 15 kg

    Height, h = 5 m

    Work is defined as the product of force and the displacement in the direction of force.

    W = F x S

    Work is a scalar quantity and its SI unit is Joule.

    Here, Force, F = m x g = 15 x 9.8 = 147 N

    So, W = 147 x 5 = 735 J

    Thus, the work is 735 J.
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