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Find the torque of a force vecF=-3hati+2...

Find the torque of a force `vecF=-3hati+2hatj+hatk` acting at the point `vecr=8hati+2hatj+3hatk` about origin

A

`sqrt(14)`

B

`sqrt(10)`

C

`sqrt(28)`

D

`sqrt(5)`

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The correct Answer is:
A
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MOTION-VECTOR & CALCULUS-EXERCISE -1
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  2. If |vecP + vecQ| = |vecP -vecQ| the angle between vecP and vecQ is

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  3. Find the torque of a force vecF=-3hati+2hatj+hatk acting at the point ...

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  4. What are the x and then y components of a 25 m displacement at an angl...

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  5. One of the rectangular components of a velocity of 60" km" h ^(-1) " ...

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  6. If vecA = hati+hatj+hatk and vecB = 2hati+hatj find vecA . vecB

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  7. If vecA = hati+hatj+hatk and vecB = 2hati+hatj find vecA xxvecB

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  8. If |vecA|= 4, |vecB|=3 and theta= 60^@ in the figure . Find vec...

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  9. If |vecA|= 4, |vecB|=3 and theta= 60^@ in the figure . Find |vec...

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  10. If 0.5hati+0.8hatj+Chatk is a unit vector. Find the value of C.

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  11. The rectangular components of a vector are (2,2) . The corresponding r...

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  12. The x and y components of a a force are 2N and -3N . The force is

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  13. Assertion: If three vectors vecA,vecB and vecC satisfy the relation ve...

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  14. The magnitude of scalar product of two vectors is 8 and of vector prod...

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  15. Two forces of magnitude 1 N and 13 N resultant of magnitude 6sqrt(5)N,...

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  16. The ratio of maximum and minimum magnitudes of the resultant of two ve...

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  17. The angle made by the vector vecA=2hati+3hatj with Y-axis is

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  18. The vector joining the points A (1,1,-1) and B (2,-3,4) & pointing A ...

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  19. y=x^(2)+x+8

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  20. s=5t^(3)-3t^(5)

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