Four particles each of mass.m. are placed at the corners of a square of side .U. The radius of gyration of the system about an axis normal to the square and passing through its centre is:

Four particles each of mass.m. are placed at the corners of a square o

1.	Four particles each of mass.m. are placed at the corners of a square of side .U. The radius of gyration of the system about an axis normal to the square and passing through its centre is:
Answer» `L//SQRT(2)` `L//2` L `sqrt(2)L` ANSWER :A