Question

explain why objects moving in fluids must have special shapes​

Answer 1

Objects moving in fluids face the friction of the fluid that opposes their motion. ... Moving objects in fluid must have special shapes because the drag force or the friction force depends on the object's shape. Therefore, special shapes are designed to minimize the opposing frictional force.

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Answer 2

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Objects moving in fluids face the friction of the fluid that opposes their motion. Moving objects in fluid must have special shapes because the drag force or the friction force depends on the object's shape. Therefore, special shapes are designed to minimize the opposing frictional force.

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