Physics, 20.07.2021 02:50, katherinelondon4002

the two ropes are used to vertically lower a 255 kg piano from exactly 4 m form a seocnd sotry window to the ground how much work is done by each of the three forces

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the two ropes are used to vertically lower a 255 kg piano from exactly 4 m form a seocnd sotry windo...