The streamlined body of an object helps in ____ friction.

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Detailed Solution

The streamlined body of an object helps in reducing friction.
The drag force depends on the area of contact on which the molecules of the medium are striking the body travelling in that medium. When the body is streamlined, this area is reduced to a very small amount. Hence, the drag force opposing the body's motion is small, allowing the body to move without much friction. Therefore, streamlining is shaping an item, including an aeroplane body, to minimize drag or resistance to movement through an airstream. The streamlined body has a sharp starting point, which in turn cuts the air or water resistance and reduces friction. For example, The streamlined body of fish helps in moving effortlessly.

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