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Let vecA be a unit vector along the axis...

Let `vecA` be a unit vector along the axis of rotation of a purely rotating body and `vecB` be a unit vector along the velocity of a particle P of the body away from the axis. The value of `vecA.vecB` is

A

1

B

-1

C

0

D

none of these

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The correct Answer is:
C
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HC VERMA-ROTATIONAL MECHANICS-Objective -1
  1. Let vecA be a unit vector along the axis of rotation of a purely rotat...

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  2. Let vecA be a unit vector along the axis of rotation of a purely rotat...

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  3. A particle moves with a constant velocity parallel to the X-axis. Its ...

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  4. A body is in pure rotation. The linear speed 'v' of a particle, the di...

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  5. From the figure find x and y.

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  6. A body is rotating uniformly about a vertical axis fixed in an inertia...

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  7. A body is rotating uniformly about a vertical axis fixed in an inertia...

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  8. If F is the force acting on a particle having position vector vec r an...

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  9. One end of a uniform rod of mas m and length l is clamped. The rod lie...

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  10. A uniform rod is kept vertically on a horizontally smooth surface at ...

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  11. A circular disc A of radius r is made from an iron plate of thickness ...

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  12. Equal torques asct on the discs A and B of theh previous problem, init...

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  13. A closed tube partly filled with water lies is a horizontal plane. If ...

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  14. The moment of inertia of a uniform semi-circular wire of mass 'M' and ...

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  15. Let I1 and I2 be the moments of inertia of two bodies of identical ge...

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  16. A body having its centre of mass at the origin has three of its partic...

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  17. A cubical block of mass M and edge a slides down a rougg inclined plan...

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  18. A thin circular ring of mass M and radius r is rotating about its axis...

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  19. A man is sitting on a rotating stool with his arms outstretched. If su...

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  20. The center of a wheel rolling on a plane surface moves with a speed v0...

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