One end of a spring of force constant $$k$$ is fixed to a vertical wall and other to a body of mass $$m$$ resting on a smooth horizontal surface. There is another wall at a distance $$x_0$$ from the body. The spring is then compressed by $$2 x_0$$ and released. The time taken to stike the wall is
- A$$\frac{\pi}{6} \sqrt{\frac{m}{k}}$$
- B$$\sqrt{\frac{m}{k}}$$
- C$$\frac{2 \pi}{3} \sqrt{\frac{m}{k}}$$
- D$$\frac{\pi}{4} \sqrt{\frac{m}{k}}$$
✓ Correct answer: C
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