[" EXERC "],[" Three point masses,each of mass "m" ,are placed at the "],[" comers of an equilateral triangle of side "L." The moment "],[" of inertia of this system about an axis along one side of "],[" the triangle is "],[[" (1) "mL^(2)," (2) "(3mL^(2))/(4)],[" (3) "3mL^(2)," (4) "(3mL^(2))/(2)]]