Question

explain why objects moving in fluids must have special shapes?????

Answer 1

Answer: Objects moving in fluidsfaces the fluid friction which opposes their motion. So to reduce the fluidfriction Objects moving in fluids must have special shapes called streamlined shapes.

Answer 2

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❥The fluid is the name given to a substance which begins to flow when an external force is applied to it.

❥ Objects moving in fluids face the friction of the fluid that opposes their motion.So,object moving in fluids must have unique shapes called streamlined shapes to reduce the fluid friction.

$\large{\boxed{\rm{\blue{Notes :}}}}$ Streamline body is a body for which the drag force on objects moving in fluids is minimum.Streamline body represents a geometry for which the friction with fluid is low. It can simply defined as the geometry of a fish.