| 1. | \(x=0 \) | 2. | \(x= \pm A \) |
| 3. | \(x= \pm \dfrac{A}{\sqrt{2}}\) | 4. | \(x=\dfrac{A}{2}\) |
| 1. | \( { K.E. }=\dfrac{k A^2}{8} \\ { P.E. }=\dfrac{3 k A^2}{8} \\ v=\dfrac{A}{3} \sqrt{\dfrac{k}{m}} \) | 2. | \({ K.E. }=\dfrac{3 k A^2}{8} \\ { P.E. }=\dfrac{k A^2}{8} \\ v=\dfrac{A}{2} \sqrt{\dfrac{3 k}{m}} \) |
| 3. | \({ K.E. }=\dfrac{3 k A^2}{8} \\ { P.E. }=\dfrac{k A^2}{4} \\ v=A \sqrt{\dfrac{3 k}{m}} \) | 4. | \({ K.E. }=\dfrac{k A^2}{4} \\ { P.E. }=\dfrac{3 k A^2}{8} \\ v=\dfrac{A}{4} \sqrt{\dfrac{3 k}{m}} \) |
| 1. | \(2\) | 2. | \(4\) |
| 3. | \(-2\) | 4. | \(-4\) |
| 1. | \(\dfrac{A}{\sqrt{2}}, \dfrac{A}{\sqrt{2}} \omega\) | 2. | \(\dfrac{A}{2}, \dfrac{A}{2} \omega\) |
| 3. | \(\sqrt2A, 2A \omega\) | 4. | \(\sqrt2A, \sqrt2A \omega\) |
| 1. | \((TE)\) is zero when \(x = 0.\) |
| 2. | \((PE)\) is maximum when \(x = 0.\) |
| 3. | \((KE)\) is maximum when \(x = 0.\) |
| 4. | \((KE)\) is maximum when \(x\) is maximum. |
| 1. | Kinetic energy is conserved |
| 2. | Momentum is conserved |
| 3. | Potential energy is conserved |
| 4. | Total energy is conserved |

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| 1. | \(\dfrac{8}{9}\) | 2. | \(\dfrac{7}{8}\) |
| 3. | \(\dfrac{1}{9}\) | 4. | \(\dfrac{1}{8}\) |
For a simple pendulum, a graph is plotted between its kinetic energy (\(KE\)) and potential energy (\(PE\)) against its displacement \(d\). Which one of the following represents these correctly? (graphs are schematic and not drawn to scale)
| 1. | 2. | ||
| 3. | |
4. |