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The radius is 2hati + hatj +hatk, While ...

The radius is `2hati + hatj +hatk`, While linear momentum is `2hati +3hatj -hatk`. The angular momentum is

A

`2hati - 4hatk`

B

`4hati - 8hatk`

C

`-4hati + 4hatj + 4hatk`

D

`4hati - 8hatj`

Text Solution

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The correct Answer is:
B
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BINA LIBRARY-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-EXERCISE
  1. A rope of negligible mass is wound around a hollow cylinder of mass 3 ...

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  2. If the earth suddenly contracts to one third of its present radius, ho...

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  3. Torque of a force F = -3hati + hatj +5hatk acting at the point r = 7h...

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  4. The radius is 2hati + hatj +hatk, While linear momentum is 2hati +3hat...

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  5. A man is moving with a constant velocity along a line parallel to X-ax...

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  6. A solid sphere is moving on a horizontal plane. Ratio of its translati...

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  7. If a sphere is rolling, the ratio of its rotational K.E to total energ...

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  8. A body rolls down an inclined plane. If its K.E of rotational motion i...

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  9. Two rings have their moments of inertia in ratio 2 : 1 and their diame...

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  10. the motion of planet in solar system is an example of

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  11. A solid sphere and a hollow sphere of the same mass and diameter, both...

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  12. A 5 kg stationary bomb is exploded in three parts masses 1 : 1 : 3 res...

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  13. When a steady torque acts on a body it

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  14. A couple produces

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  15. Moment of inertia of a body comes into play

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  16. The angular momentum of a body is defined as the product of

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  17. A mass M is moving with a constant velocity parallel to x axis. Its an...

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  18. When torque acting upon a system is zero, which of the following will ...

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  19. The MI of solid sphere and a spherical shell of equal mass about their...

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  20. A spherical ball rolls on a table without slipping .The fraction of it...

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