A particle of mass 2 kg released from po...

A particle of mass 2 kg released from point A(2, 0, 0) m as shown in the figure. The rate of change of angular momentum of the particle about the origin at time t = 2 s will be (Origin is taken somewhere above the ground in space at sufficient height and `g = -10 hat j m/s^2 )

A

`(+40 hat k)N-m`

B

`(-40 hat k)N-m`

C

`(+40 hat j)N-m`

D

`(-40 hat j)N-m`

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The correct Answer is:

B

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