Class 11 Physics — Chapter 6: OSCILLATIONS

What you'll learn

• ▸Periodic and Oscillatory Motion
• ▸Fundamental Parameters of Oscillation
• ▸Simple Harmonic Motion (SHM) Displacement Equation
• ▸SHM and Uniform Circular Motion
• ▸Velocity and Acceleration in SHM
• ▸Force Law for SHM
• ▸Energy in Simple Harmonic Motion
• ▸The Simple Pendulum

Chapter Summary

--- PAGE 1 --- CHAPTER THIRTEEN OSCILLATIONS 13.1 Introduction 13.2 Periodic and oscillatory motions 13.3 Simple harmonic motion 13.4 Simple harmonic motion and uniform circular motion 13.5 Velocity and acceleration in simple harmonic motion 13.6 Force law for simple harmonic motion 13.7 Energy in simple harmonic motion 13.8 The simple pendulum Summary Points to ponder Exercises 13.1 INTRODUCTION In our daily life we come across various kinds of motions. You have already learnt about some of them, e.g., rectilinear motion and motion of a projectile. Both these motions are non-repetitive. We have also learnt about uniform circular motion and orbital motion of planets in the solar system. In these cases, the motion is repeated after a certain interval of time, that is, it is periodic. In your childhood, you must have enjoyed rocking in a cradle or swinging on a swing. Both these motions are repetitive in nature bu…

Practice Questions from this Chapter

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1. Explain how sound waves vibrate. Get Solution →
2. Show real-world pendulum uses. Get Solution →
3. Describe what causes oscillations. Get Solution →
4. What is a motion that repeats itself at regular intervals of time called? Get Solution →
5. What is the SI unit for the period of a motion? Get Solution →
6. Which formula correctly relates frequency (v) to period (T)? Get Solution →
7. What is the name given to the unit of frequency, equivalent to 1 s⁻¹? Get Solution →
8. According to the text, what is the simplest form of oscillatory motion? Get Solution →

Did you know?

• 💡 Earthquakes cause the entire planet to oscillate, sometimes for hours.
• 💡 Galileo discovered the laws of the pendulum by watching a swinging lamp.
• 💡 Bees vibrate their flight muscles to warm up their bodies on cold days.
• 💡 Halley's Comet is a periodic visitor, appearing in our sky every 76 years.
• 💡 Molecules inside all matter are constantly vibrating, even in a solid ice cube.

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