Friction - Why is it difficult to pull a boat on the beach than on the sea? | #aumsum #kids #science

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Published at : 29 Dec 2020
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Topic: Friction
Why is it difficult to pull a boat on the beach than on the sea?
Hey. You will find it difficult to pull the boat on the beach.
Pull it on the sea. There it will be quite easy.
Indeed. Why not?
Fine. Don't listen.
I am so tired.
At least now try to pull the boat on the sea.
It is quite easy, right?
Yeah.
Do you know why?
This is because of friction.
Friction is the force which opposes the motion of an object.
It always acts in the direction opposite to the direction of motion.
The amount of friction depends upon the texture of an object and the surface on which it is being moved.
Rough textures or surfaces offer greater friction as compared to smooth textures or surfaces.
Do you want to say that my brand new boat has a rough texture?
No.
Even though the texture of the boat is almost smooth, the small particles of sand present on beach form a rough surface.
Hence, when we pull the boat on beach, the sand particles offer greater friction and oppose the motion of the boat, thus making it difficult to move the boat on beach.
However, the sea being a liquid, forms a smooth surface.
Hence, when we pull the boat on sea, it offers less friction, thus making it comparatively less difficult to pull the boat on sea.
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