An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary, the tension in the cable was 4500 N. When the craft was lowered or raised at a steady rate, the motion through the water added an 1800 N drag force.
An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary, the tension in the cable was 4500 N. When the craft was lowered or raised at a steady rate, the motion through the water added an 1800 N drag force.
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