Physics
Grade-9
Easy
Question
Why will the fluid friction be less for a fish as compared to the box in the water?
- Because it floats in water
- Because it is a fish
- Because of its shape
- It will not be less
Hint:
The body of the fish has a streamlined body with soft slippery surface as it produces mucous, reducing the liquid friction.
The correct answer is: Because of its shape
The fluid friction will be less for a fish as compared to the box in the water because of its shape.
- Liquid friction is caused when two layers of moving water get in contact with a force.
- The liquid friction depends on the surface structure of the object that moves in a liquid.
- The body of the fish has a slippery surface which reduces the liquid friction which means fish can move through water with ease because their bodies are streamlined, which causes less friction.
- As a result, it travels through water and slices through it with ease.
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