Question

`\qquad \qquad\huge \underline{\boxed{\sf question}}`

How do you find the coordinates of centre of mass of multiple particle system ? ​

Answer 1

By dividing the moments around the y-axis and around the x-axis,

respectively, by the total mass, the x- and y-coordinates of the centre of

mass may be determined.

formula's:

• 
  `y.cm=\left[\begin{array}{ccc}(m1y1+m2y2+...)/(m1+m2+...)\end{array}\right]`

• 
  `x.cm=\left[\begin{array}{ccc}(m1x1+m2x2+....)/(m1+m2+.....)\end{array}\right]`

• centre of two mass particle system:
  `\left[\begin{array}{ccc}(m1+m2) r.cm =(m1 )r1+(m2) r2\end{array}\right]`