Question

14
Obtain

an
expression for the position vector of the
centre of
a
system
of
n particles​

Answer 1

Answer:

As per the definition of the centre of mass, thecentre of mass of the original disc is supposed to be concentrated at O, while that of the smaller disc is supposed to be concentrated at O′. After the smaller disc has been cut from the original, the remaining portion is considered to be asystem of two masses.

Answer 2

Answer:

I can't understand the question.....