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Which force gets reduced when the two su...

Which force gets reduced when the two surface in contact are polished to make them smooth ?

A

Contact force

B

Friction force

C

Gravitational force

D

Both A and B

Text Solution

Verified by Experts

The correct Answer is:
B
Friction force gets reduced when the two surfaces in contact are polished to make them smooth.
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LAKHMIR SINGH & MANJIT KAUR-FRICTION-EXERCISE
  1. Name two common lubricants.

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  2. Why do we sprinkle fine powder on carrom board ?

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  3. Which force gets reduced when the two surface in contact are polished ...

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  4. Why is the surface of a slide polished to make it smooth ?

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  5. Name the force which increases when the two surface in contact are mad...

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  6. What is the special name of frictional exerted by fluids (like air or ...

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  7. What is the name of 'special shape' which is given fo objects moving t...

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  8. Why are grooves provided in the soles of shoes ?

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  9. Why are treads made in the surface of tyres ?

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  10. Fill in the following blanks with suitable words : Friction always o...

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  11. Fill in the following blanks with suitable words : Sliding friction ...

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  12. Fill in the following blanks with suitable words : Friction produces...

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  13. Fill in the following blanks with suitable words : Friction prevent ...

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  14. Fill in the following blanks with suitable words : Sprinkling of pow...

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  15. Fill in the following blanks with suitable words : Ball bearings red...

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  16. Fill in the following blanks with suitable words : The friction when...

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  17. Fill in the following blanks with suitable words : Cars and speedboa...

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  18. Fill in the following blanks with suitable words : Shapes that are d...

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  19. Fill in the following blanks with suitable words : Object which can ...

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  20. Fill in the following blanks with suitable words : The shape of an a...

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