Question

Explain why objects moving in fluids must have special shapes.​

Answer 1

Answer:

The objects moving in fluids must have special shapes because when an object is moving through fluid then an opposing frictional force acts on it which stops the object moving through or make it difficult.

Example : Aeroplanes, Birds etc.

Explanation:

Only these lines are correct, and anything else you will write, marks will be less ( these are main points )

Answer 2

$\fbox\pink{A}\fbox\blue{N}\fbox\green{S}\fbox\red{W}\fbox\purple{E}\fbox\orange{R}$

❥ 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.

$\large{\boxed{\mathbb{\red{Notes :}}}}$ 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.