Objects Moving in Fluids Must Have Special Shapes

Q. Objects Moving in Fluids Must Have Special Shapes. Why?

Objects moving in fluid must have special shapes because of force. Force includes drag force and friction force. Special shapes are made to decrease the opposing frictional force. We know that the drag force and the friction force depend on the object’s shape. The shape given to the object moving in fluid generally is streamlined. This shape is given to objects to avoid friction between objects and fluid. It is also used to reduce drag.

Besides shape, there are two types of flow in which an object is moving. The flows are laminar flow and turbulent flow. The turbulent flow generates more drag compared to laminar flow due to eddy formation.

 Objects moving in fluid have streamlined shapes. The special shape of objects moving in the fluid is edgy at the end. Cars and aeroplanes usually have these kinds of shapes. To decrease the drag, the object is given a special shape.

When an object is moving in any liquid medium, an opposing force generated by the liquid against the motion of the object to reduce this special shape is given.

Special shapes experience less friction; they can pass easily in the fluid medium. Some examples include aeroplanes and ships; they also have special shapes to avoid friction. Objects moving in fluid must have a unique shape to overcome fluid friction. Most of the special shapes include streamlined shapes to resist the motion of the fluid. 

At last, we conclude that friction acting on it is minimised by giving special shapes.