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A particle of mass 0.5 kg is displaced f...

A particle of mass `0.5 kg` is displaced from position `vec r_(1)(2,3,1)` to`vec r_(2)(4,3,2)` by applying a force of magnitude `30 N` which is acting along `(hati + hatj + hatk)`. The work done by the force is

A

`10sqrt(3)J`

B

`30sqrt(3)J`

C

`30J`

D

none of these

Text Solution

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The correct Answer is:
B
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MOTION-WORK, POWER & ENERGY -Exercise - 1
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  2. A force vecF=k[yhati+xhatj] where k is a positive constant acts on a p...

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  3. A particle of mass 0.5 kg is displaced from position vec r(1)(2,3,1) t...

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  4. A particale moves under the effect of a force F = Cs from x = 0 to x =...

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  5. A force F=(3xhati+4hatj) Newton (where x is in metres) acts on a parti...

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  6. The relationship between force and position is shown in the figure giv...

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  7. A force vecF=2hati-3hatj+7hatk(N) acts on a particle which undergoes a...

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  8. The work done in pushing a block of mass 10 kg from bottom to the top...

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  9. A locomotive of mass m starts moving so that its velocity varies accor...

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  10. A body of mass 2 kg fall vertically, passing through two points A and ...

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  11. A block of mass M is hanging over a smooth and light pulley by a const...

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  12. A light and a heavy body have equal momenta. Which one has greater K.E

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  13. A 300 g mass has a velocity of (3hati + 4hatj) m//s at a certain inst...

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  14. A 4 kg mass and 1kg mass are moving with equal kinetic energies. The r...

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  15. If the linear momentum is increased by 50%, then KE will be increased...

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  16. A chain of mass m and length l is placed on a table with one-sixth of ...

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  17. A body of mass 2 kg is moved from a point A to a point B by an externa...

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  18. A running man has half the KE that a body of half his mass has. The ma...

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  19. A man slides down a snow covered hill along a curved path and falls 20...

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