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A force F = 2i - lambdaj + 5k is applied...

A force F = `2i - lambdaj + 5k` is applied at the point A (1,2,5). If its moment about the point (-1, -2, 3) is 16i - 6j + 2 `lambda` k, then `lambda` =

A

`-2`

B

`-1`

C

0

D

2

Text Solution

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-PRODUCTS OF VECTORS-Exercise 1B Cross Product of Vectors
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  3. The vector area of the Delta ABC whose vertices are a,b,c is

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  5. If |vec(a)|=sqrt3, |vec(b)|=2, (vec(a), vec(b))= (pi)/(3), then the ar...

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  6. If the area of the parallelogram whose adjacent sides are 3 vec(i) - 4...

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  7. If a = 2i + 2j + k, a.b = 14, a xx b = 3i + j - 8k then b =

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  8. If a = (1,1,1) c = (0,1, -1) are given vectors then a vector b satisfy...

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  9. If a = 2i + k, b = I + j + k, c = 4i - 3j + 7k. The vector r satisfyin...

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  10. The vector c is perpendicular to both a = (1, -2, -1), b = (2, 1, -1) ...

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  11. If a,b are two unit perpendicular vectors and c is a unit vector which...

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  12. If a = I + 2j + 3k, b = -I + 2j + k, c = 3i + j and d is normal to bot...

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  13. If x.a = 0, x xx b = c xx b then x =

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  16. The perpendicular distance from A (1,4, -2) to the line BC, where B = ...

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  17. The perpendicular distance from the point 3i - 2j + k to the line join...

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  18. If A (1,2,3), B (2,3,1), C (3,1,2) then the length of the altitude thr...

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  20. A force F = 2i - lambdaj + 5k is applied at the point A (1,2,5). If it...

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