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If force (vecF)=4hati+4hatj and displace...

If force `(vecF)=4hati+4hatj` and displacement `(vecs)=3hati+6hatk` then the work done is

A

`4xx3`

B

`5xx6`

C

`6xx3`

D

`4xx6`

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The correct Answer is:
A
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ERRORLESS -VECTORS-Exercise
  1. the angle between the vectors (hati+hatj) and (hatj+hatk) is

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  2. The position vectors of points A,B,C and D are A=3hati+4hatj+5hatk,B=4...

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  3. If force (vecF)=4hati+4hatj and displacement (vecs)=3hati+6hatk then t...

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  4. if|vecAxxvecB|=|vecA.vecB|, then angle between vecA and vecB will be

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  5. In a clockwise system:

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  6. The linear velocity of a rotating body is given by vec(v)= vec(omega)x...

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  7. Three vectors veca,vecb and vecc satisfy the relation veca.vecb=0 and ...

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  8. The diagonals of a parallelogram are 2hati and 2hatj. What is the area...

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  9. What is the unit vector perpendicular to the following vectors 2hati+2...

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  10. The area of the parallelogram whose sides are represented by the vecto...

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  11. The position of a particle is given by vecr=(hati+2hatj-hatk) and mome...

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  12. Two vector A and B have equal magnitudes. Then the vector A+B is perpe...

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  13. Find the torque of a force vecF= -3hati+hatj+5hatk acting at the poin...

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  14. the value of (vecA+vecB)xx(vecA-vecB) is

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  15. If vecA and vecB are perpendicular vectors and vector vecA=5hati+7hatj...

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  16. A body, under the action of a force vec(F)=6hati -8hatj+10hatk , acqui...

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  17. Area of a parallelogram formed by vectors (3hati-2hatj+hatk)m and (hat...

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  18. The position vectors of radius are 2hati+hatj+hatk and 2hati-3hatj+hat...

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  19. What is the value of linear velocity, if vecomega=3hati-4hatj+hatk and...

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  20. Dot product of two mutual perpendicular vector is

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