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Chapter 9
| Question | Answer |
|---|---|
| Simple Harmonic Motion (SHM) | A type of periodic motion where the restoring force is directly proportional to the displacement from equilibrium and acts in the opposite direction. |
| Spring Constant (k) | A measure of a springโs stiffness. It defines how much force is needed to stretch or compress a spring by a certain distance. |
| Amplitude (A) | The maximum displacement from the equilibrium position in oscillatory motion. It represents the peak value of position and is usually measured in meters (m). |
| Elastic Potential Energy | The energy stored in a stretched or compressed spring. Formula: ๐=(1/2)๐๐ฅ^2 |
| cycle | One complete repetition of a periodic motion. For example, one full back-and-forth motion of a pendulum or spring. |
| Period (T) | The time it takes to complete one full cycle of motion. Units: seconds (s). |
| Frequency (f) | The number of cycles per second. |
| Hertz (Hz) | The SI unit for frequency. 1 Hz means one cycle per second. |
| Effective Spring Constant | When multiple springs are combined, the effective spring constant describes the overall stiffness |
| Simple Pendulum | A mass (called a bob) suspended from a string or rod of fixed length that swings back and forth under the influence of gravity. It exhibits SHM for small angles. |