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04-01-2021
Physics

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What is the net work done to lift a 6 kg block a height of 5.3 meters and then lower it back to the ground where it started?

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04-01-2021

Answer:

636 J

Explanation:

The weight of the block is =mg = 6kg × 10 ms-2 = 60 N

Since it was raised and dropped back to it's original position, distance = 5.3 × 2 = 10.6 m

Work done = 60N × 10.6 m = 636 J

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