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Physics, 31.07.2021 23:00 densliverdensentos

A drum of mass 100kg is rolled into the deck of a lorry 1.5m above a horizontal floor using a plank 4m long. calculate the work done against gravity during the process (g=10m/s)

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A drum of mass 100kg is rolled into the deck of a lorry 1.5m above a horizontal floor using a plank...

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