[" A particle of mass "m" is attached with three springs "A,B" and "C" of equal force "],[" constants "k" as shown in figure.The particle is pushed slightly against the spring "C],[" and released,the time period of oscillation will be "],[[" (a) "2 pi sqrt((m)/(k))," (b) "2 pi sqrt((m)/(2k))],[" (c) "2 pi sqrt((m)/(3k))," (d) "2 pi sqrt((m)/(5k))],[" A uniform stick of length "l" is mounted so as to rotate about a horizontal axis nerpendicular to the sticie sticie sties "]]