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Question #03eda

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Deep · Stefan V.

Jul 29, 2017

$6 m g h$ $6mgh$

Explanation:

To calculate the total work done, just add up the difference in the initial and final energy states of the four boxes.

$energy change = mass \cdot g \cdot height change$ $"energy change" = "mass" * g * "height change"$

So

$box 1: energy change = 0$ $"box 1: " "energy change = 0"$

$box 2: energy change = m g h$ $"box 2: " "energy change"= mgh$

$box 3: energy change = 2 m g h$ $"box 3: " "energy change"= 2mgh$

$box 4: energy change = 3 m g h$ $"box 4: " "energy change"= 3mgh$

The total energy change $= 6 m g h$ $= 6mgh$

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