An oil tanker drops anchor and the anchor imbeds itself sufficiently to keep the tanker in a stable position. How does the tanker pull up the anchor if the movement of the tanker itself wasn’t enough force to pull it up?
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When the anchor chain is straight up and down the anchor doesn’t have much holding power so the tanker can easily pull it up. Anchors work because of the angle of pull, the more horizontal the better it holds.
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