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A bodys constrained to more in the Y-direction ,Is subject to a force `vecF=(-2hati+15hatj+6hatk)` N What is the work done by force in moving the body through a distance of 10 m along the Y-axis ?

A

190 J

B

160J

C

150 J

D

20 J

Text Solution

Verified by Experts

The correct Answer is:
C

Work in y-axis.
`15 xx 10 = 150 J`
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GRB PUBLICATION-VECTORS-OBJECTIVE QUESTIONS
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  2. The angle between the vectors (hati+hatj) and (hatj+hatk) is

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  3. A bodys constrained to more in the Y-direction ,Is subject to a force...

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  4. A vector vecF(1) is along the positive X-axis. If its vectors product ...

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  5. The torque of the force vecF=(2hati-3hatj+4hatk)N acting at the point ...

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  6. The position vector of a particle is r = a sin omega t hati +a cos ome...

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  7. The angle made by the vector 4hati - 3hatj + 5hatk with z-axis is :

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

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  9. The resultant of two forces , one double the other in magnitude is pe...

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  10. The value of n so that vectors 2hati+3hatj-2hatk, 5hati+nhatj+hatk and...

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  11. A projectile of mass m is fired with a velocity v from point P at an a...

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  12. Magnitudes of four pairs of displacement vectors are given. Which ...

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  13. Two forces of magnitudes 30, 60 and P newton acting at a point a...

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  14. A force F=ahati+bhatj+chatk is acted upon a body of mass m. If the bod...

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  15. Let vecF be a force acting on a particle having positon vector vecr. L...

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  16. If |vecA xx vecB| = sqrt(3) vecA .vecB then the value of |vecA xx ve...

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  17. vecA, vecB and vecC are vectosrs each having a unit magneitude. If ...

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  18. Three forces act on a body. The body will certainly have an accele...

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  19. If the sum and difference of two vectors are at right angles, show tha...

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  20. Vectors vecA and vecB are mutually perpendicular . Component of vecA...

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