If in a body, carrying n particles of mass mi and position \(\vec r_i\), acceleration due to gravity (gi) does not vary from point to point, then at centre of gravity
1
\( \sum_{i = 1}^{i = n}m_i\vec r_i\neq0\)
2
\( \sum_{i = 1}^{i = n}m_i\vec r_i=0\)
3
either 1) or 2)
4
none of the above
5
Question Not Attempted