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Question
Fluid friction on an object can be reduced by:
Fluid friction on an object can be reduced by:
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Solution
The correct option is D Providing special shape
To reduce fluid friction, we can provide special shapes like that of birds and fishes to objects so that the objects can easily move through fluids without much resistance.
However, by polishing, using ball bearings, or lubricants, we can reduce friction between two solid surfaces but not fluid friction.
To reduce fluid friction, we can provide special shapes like that of birds and fishes to objects so that the objects can easily move through fluids without much resistance.
However, by polishing, using ball bearings, or lubricants, we can reduce friction between two solid surfaces but not fluid friction.
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