A man is working as a labourer in a construction site He carries 10 bricks of 1kg each to the roof of a building 5m high by

Question

A man is working as a labourer in a construction site He carries 10 bricks of 1kg each to the roof of a building 5m high by climbing a ladder 52 The amount of work done by the labourer is a 490 J b 940J c 500J d 380J

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