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A particle of mass 0.01 kg travels along...

A particle of mass 0.01 kg travels along a space curve with velocity given by `4hat(i)+16 hat (k)m//s` After some time its velocity becomes `8hat(i)+20hat(j)m//s` due to the action of a conservative force The work done on the particle during this interval of time is:

A

0.32 J

B

6.9 J

C

9.6 J

D

0.96 J

Text Solution

Verified by Experts

The correct Answer is:
D
(d) Work done on the particle,`W=DeltaKE =(1)/(2)m(v_(f)^(2)-v_(i)^(2))`
`=(1)/(2)xx0.01[(64+400)-(16+256)]`
=0.96 J
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DC PANDEY-WORK, ENERGY AND POWER-CHECK POINT 6.2
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  11. Velocity-time graph of a particle of mass (2 kg) moving in a straight ...

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  12. A particle of mass 0.01 kg travels along a space curve with velocity g...

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  14. A body of mass 5 kg is raised vertically to a height of 10 m by a forc...

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  16. A block of mass 2 kg is dropped from a height of 40 cm on a spring who...

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  17. In which of the following cases the, potential energy is defined?

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  18. The potential energy of a system increased if work is done

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