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A particle acted by constant forces 4...

A particle acted by constant forces `4 hat i+ hat j-3 hat ka n d3 hat i+ hat9- hat k` is displaced from point ` hat i+2 hat j+3 hat k` to point `5 hat i+4 hat j+ hat kdot` find the total work done by the forces in units.

A

30 units

B

40 units

C

50 units

D

20 units

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The correct Answer is:
B
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MCGROW HILL PUBLICATION-VECTOR ALGEBRA-QUESTIONS FROM PREVIOUS YEARS. AIEEE/JEE MAIN PAPERS
  1. lf bara = 3i - 5j and barb = 6i + 3j are two vectors, and barc is a ve...

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  2. Let vec u=hat i+hat j,vec v=hat i-hat j and vec w=hat i+2 hat j+3hat k...

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  3. A particle acted by constant forces 4 hat i+ hat j-3 hat ka n d3 ha...

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  4. The vector bar(AB)=3hati+4hatk and bar(AC)=5hati-2hatj+4hatk are the s...

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  5. If a,b,c are non coplanner vectors and lambda is a real no.then the ve...

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  6. Let vec u , vec va n d vec w be such that | vec u|=1,| vec v|=2a n d|...

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  7. Let veca,vecb and vecc be the non zero vectors such that (vecaxxvecb)x...

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  8. If C is the mid-point of AB and P is any point outside AB, then

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  9. For any vector x, the value of (vecx×hati)^2+(vecx×hatj)^2+(vecx×hatk)...

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  10. Let a, b,c be distinct non-negative numbers. If the vectors ai + aj + ...

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  11. If bara,barb,barc are non-coplanar vectors and lambda is a real number...

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  12. Let vec a= vec i- vec k , vec b=x vec i+ vec j+(1-x) vec k and vec c...

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  13. If (a xx b) xx c = a xx (b xx c). Where a,b and c are any three vector...

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  14. Values of a for which the points A, B, C with position vectors 2i - j+...

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  15. Let vec(a) = hat(i) + hat(j) + hat(k),vec(b) = hat(i) - hat(j) + 2hat(...

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  16. If hat u and hat v are unit vectors and theta is the acute ang...

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  17. The vector veca=alpha hati+2hatj+betahatk lies in the plane of vectors...

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  18. The non-zero vectors are vec a,vec b and vec c are related by vec a= ...

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  19. If vecu, vecv, vecw are non -coplanar vectors and p,q, are real numbe...

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  20. vectors veca=i-j+2k , vecb=2i+4j+k and vecc=lambdai+j+muk are mutually...

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