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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

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

A charged glass rod attracts a charged plastic straw.


Select the correct alternative. 

Friction is reduced by


What is the cause of friction?


State two factors which directly affect the force of friction.


Define static friction


Fill in the blank.

.................... is the SI unit of force.


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.

Sliding friction and rolling friction are types of .................. friction.


Tick the most appropriate answer.

Force of friction comes into play when a/an


Tick the most appropriate answer.

Friction is offered by


Tick the most appropriate answer.

Friction produces


Fill in the blank.

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


Fill in the blank.

Friction depends upon the ............... of an object.


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

Why is difficult for a pen to leave a mark on a highly smooth plastic sheet?


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

Name a method used to reduce friction.


Answer the following in detail.

Describe three different ways by which friction can be increased to help us in various situations?


A moving body comes to rest due to friction alone.


We have two identical metal sheets. One of them is rubbed with sand paper and the other with ordinary paper. The one rubbed with sand paper shines more than the other. Give reason.


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