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A particle of mass m is released from rest from point P at x =  on the axis from the origin O and falls vertically along y-axis as shown . what is the magnitude of the angular momentum of the particle about O at time t?
Asked by Topperlearning User | 12 Aug, 2014, 09:57: AM
answered-by-expert Expert Answer

                                      

 

We know that,

    

or  -----------------1

As v = u + gt

    v= 0 + gt                                (because u =0)

      v = gt      ---------------------2    

In Δ OPQ,

 =       -----------3

putting the values of v and from eq. 2 and 3, in eq.1, we get

 =  mgtxo

Answered by | 12 Aug, 2014, 11:57: AM

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