Question

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Answer 1

If we have masses

$m_1,m_2......m_n$

at points

$x_1,x_2....x_n$

along the x-axis,then the moment of system around the origin is

$M_0 = m_1x_1+m_2x_2+........+m_nx_n$

The center of mass of the system is

$X = \frac{M_0}{m}$

$where \: m = m_1+m_2+......+m_n$

So,

$X = \frac{m_1x_1+m_2x_2+........+m_nx_n}{m_1+m_2+......+m_n}$

Answer 2

Answer:

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