how object moving in a fluid must have special shapes explain it
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Explanation:
Moving objects in fluid must have special shapes because the drag force or the friction force depends of the shape of the object. Special shapes are designed to minimize the opposing frictional force.
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Answer :
When a body moves through a fluid, it experiences an opposing force which tries to oppose its motion through the fluid. The opposing force is known as drag force. This frictional force depends on the shape of the body. By giving objects a special shape, the force of friction acting on it can be minimised. Hence, it becomes easier for the body to move through the fluid.
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