Physics, 29.08.2019 04:00, zionboy77

How much work is done when a hoist lifts a 220-kg rock to a height of 4 m? (use 9.8 m/s2 for the acceleration due to gravity.)

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How much work is done when a hoist lifts a 220-kg rock to a height of 4 m? (use 9.8 m/s2 for the ac...