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A heavy mass is attached to a thin wire ...

A heavy mass is attached to a thin wire and is whirled in a vertical circle. The wire is most likely to break

A

a) when the mass is at the highest point

B

b) when the mass is at the lowest point

C

c) when the wire is horizontal

D

d) at an angle of `cos^-1(1/3)` from the upward vertical.

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HC VERMA-SOME MECHANICAL PROPERTIES OF MATTER-Objective-1
  1. When metal wire is stretched by a load the fractional change in its vo...

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  2. The length of a metal wire is l1 when the tension in it is T1 and is l...

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  3. A heavy mass is attached to a thin wire and is whirled in a vertical c...

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  4. When a metal wire elongates by hanging a load on it, the gravitational...

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  5. By a surface of a liquid we mean

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  6. An ice cube is suspended in a vacuum in gravity free hall. As the ice...

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  7. When water droplets merge to form a bigger drop

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  8. The dimensions ML^-1T^-2 may correspond to

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  9. Air is pushed into a soap bubble of radius r to double its radius, of ...

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  10. If more air is pushed in a soap bubble, the pressure in it will

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  11. If two soap bubbles of different radii are connected by a tube, then

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  12. Figure shows a capillary tube of radius r dipped into water. If the a...

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  13. The excess pressure inside a soap bubble is twice the excess pressure ...

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  14. Which of the following graphs may represent the relation between the c...

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  15. Water rises in a vertical capillary tube upto a length of 10 cm if the...

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  16. A 20 cm long capillary tube is dipped in water. The water rises up to ...

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  17. Viscosity is a property of

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  18. The force of viscosity is

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  19. The viscous force acting between 2 layers of a liquid is given by (F)/...

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  20. A raindrop falls near the surface of the earth with almost uniform vel...

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