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Explain why roof of building flyout duri...

Explain why roof of building flyout during stormy wind.

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The velocity of air on upper side of roof is more hence low pressure would exist , whereas the velocity of air at below the roof is less and more pressure .Due to excess pressure the roof of building flyout.
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KUMAR PRAKASHAN-MECHANICAL PROPERTIES OF FLUIDS -SECTION -C (Objective Questions) (VSQs)
  1. When a fluid passes through a constricted part of a pipe ,what happens...

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  2. Why does a flag (or ensign) flutter when there is strong wind ?

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  3. Explain why roof of building flyout during stormy wind.

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  4. Why does an airplane run a certain length on the runway first before t...

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  5. Explain why bullets of gun are cylinder in shape ?

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  6. What is magnus effect ?

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  7. Give reason why mercury does not wet glass .

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  8. Why free surface of liquid tend to contract their surface ?

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  9. When drops of mercury are placed on a clean surfaces of glass , they m...

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  10. Give reason why are some insects able to walk on water surface ?

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  11. Why surface tension of antiseptics kept less ?

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  12. Explain why is hot soup more testy than the colder one ?

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  13. It is better to wash clothes in hot water than in cold water .Explain ...

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  14. Detergents is added to water for removing dirt from clothes.Explain .

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  15. Why colours and lubricating oil have less surface tension ?

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  16. Arrange the following liquids in increasing order of surface tension ....

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  17. If a liquid does wet the surface ,its angle of contact is acute or obt...

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  18. Liquid is stick to the glass then angle of contact for liquid glass wi...

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  19. On what factors does the value of angle of contact depend ?

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  20. How angle of contact depend on temperature ?

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