Question

One end of a thin uniform rod of length L and mass M is riveted to the centre of
a uniform circular disc of radius r and mass 2 M so that the rod is normal to
the disc. The centre of mass of the combination from the centre of the disc is
at distance of

1)
zero
2)
L
2
3)
3
4)
L
6​

Answer 1

Answer:

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