Starting from the origin, a body oscillates simple harmonically with a period of 2 s. After what time will its kinetic energy be $75\%$ of the total energy? (1) $\frac{1}{12}$ s (2) $\frac{1}{6}$ s (3) $\frac{1}{4}$ s (4) $\frac{1}{3}$ s
Starting from the origin, a body oscillates simple harmonically with a period of 2 s. After what time will its kinetic energy be $75\%$ of the total energy?\\
(1) $\frac{1}{12}$ s\\
(2) $\frac{1}{6}$ s\\
(3) $\frac{1}{4}$ s\\
(4) $\frac{1}{3}$ s