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  4. Six particles each of mass 'm' are placed at the comers of a regular hexagon of edge length 'a'. If a point mass 'm0' is placed at the center of the hexagon, then the net gravitational force on the point mass 'm0' is

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Q. Six particles each of mass 'm' are placed at the comers of a regular hexagon of edge length 'a'. If a point mass $'m_0'$ is placed at the center of the hexagon, then the net gravitational force on the point mass $'m_0'$ is

COMEDKCOMEDK 2000System of Particles and Rotational Motion

Solution:

The force exerted by each particle placed on the vertices, over the particle at the centre are equal in magnitude and cancel each other vectorially. Thus the resultant force on it is equal to zero.