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The position vectors of the head and tai...

The position vectors of the head and tail of radius vector are `2hati+hatj+hatk` and `2hati-3hatj+hatk`. The linear mementium is `2hati+3hatj+hatk`. The angular momentum is :

A

`4 hati-8 hatk`

B

`2 hati-3 hatj+hatk`

C

`2 hati+3 hatj+hatk`

D

`2 hati-hatj+hatk`

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The correct Answer is:
A
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MODERN PUBLICATION-DESCRIPTION OF MOTION IN TWO AND THREE DIMENSION-Revision TEST
  1. The torque of a force vecF=-3hati+hatj+5hatk acting at a point is vect...

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  2. The position vectors of the head and tail of radius vector are 2hati+h...

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  3. Given vec r=2 hat i+hat j+hat k and vec P=2 hat i+3 hat j+hat k angula...

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  4. The angle between two vectors vec A =vec B is theta. The resultant of ...

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  5. Two forces of magnitude F and sqrt(3) F act at right angles to each ot...

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  6. The magnitude of the vector product of two vectors is 4. The magnitude...

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  7. ABCDEF is a regular hexagon with point O as centre. The value of vec(A...

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  8. A projectile is projected horizontally with 8 ms^(-1) , its velocity a...

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  9. Two projectiles are thrown with same velocity but at an angle theta an...

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  10. A projectile is thrown with angle of projection tan^(-1)(4/3) The rati...

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  11. The angle between two vectors 2 hat i+3 hat j+hat k and 3 hat i + 6 ha...

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  12. If resultant of two forces vec F and vec F is F. The angle between two...

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  13. A ball is projected at an angle 30° with the horizontal. What is the c...

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  14. A body is projected with K.E. ‘E’ so as to have a maximum horizontal r...

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  15. Angle which the vector vec A = 2 hat i+3 hat j makes with the y-axis i...

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  16. If the magnitude of the vector product is sqrt(3) times the magnitude ...

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  17. If vec(A).vec(B)=|vec(A)xxvec(B)|, then the resultant of vec(A) and ve...

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  18. A ball is projected from a certain point on the surface of a planet at...

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  19. The vector which must be added to the sum of the two vectors hat i+2 h...

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  20. If the time of flight of a body is T and horizontal range is R, then t...

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