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Explain why sportsmen use shoes with spikes. - Science

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प्रश्न

Explain why sportsmen use shoes with spikes.

स्पष्ट करा
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उत्तर

Sportsmen wear shoes with spikes because they give them a better grip while running. The force of friction between the shoes and the ground increases with the help of spikes.

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Force of Friction
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पाठ 12: Friction - Exercises [पृष्ठ १५५]

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एनसीईआरटी Science [English] Class 8
पाठ 12 Friction
Exercises | Q 6 | पृष्ठ १५५

संबंधित प्रश्‍न

Give examples to show that friction is both a friend and a foe.


A charged glass rod attracts a charged plastic straw.


Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.


Write true or false.

Liquids offer more friction than the gases.


Name the two kinds of forces in nature.


Give an example to illustrate the existence of the force of friction.


What is the cause of friction?


Define static friction


State if the following statement is true or false. Correct the statement if it is false.

If two forces acting in opposite directions on a body arc of equal magnitude, then the body will not move.


Answer the following in short.

Define force. Write its SI unit.


Fill in the blank.

The force of friction acting between two bodies in contact while at rest is known as ................ friction.


Fill in the blank.

Rolling friction is ........... than sliding friction.


Answer the following in a word or two or in a sentence.

Name the force responsible for opposing the motion between two bodies in contact.


Rolling friction is slightly greater than sliding friction.


Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play



In the following figure, a boy is shown pushing the box from right to left. The force of friction will act on the box


Friction depends on the ______ of two surfaces in contact.


Analogy

Objects placed at rest on earth: ______:: Bodies slide over the surface on other body: ______.


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