🌊 Oscillations

Chapter: Mechanics · Level ★★☆ · Time: 30 min

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After this worksheet you can

Understand: Oscillatory MotionUnderstand: Period and FrequencyUnderstand: AmplitudeUnderstand: Restoring Force

📚 Quick Recap

An oscillation is any repeating back-and-forth motion around a central equilibrium position — from a swinging pendulum to a vibrating guitar string.

🧠 Section A · Concept Check ● BEGINNER 4 × 1 = 4

1A pendulum swings once every 1.5s. Find its frequency.

2An oscillator has frequency 25 Hz. Find its period.

3A guitar string vibrates with period 0.004s. Find its frequency.

4What is the equilibrium position in an oscillating system?

🧮 Section B · Problem Solving ● INTERMEDIATE 4 × 3 = 12

5Why does a mass on a spring oscillate rather than just returning to equilibrium and stopping?

6If an oscillation has period 0.5s, how many oscillations occur in 10 seconds?

7What term describes the gradual decrease in amplitude of a real oscillating system over time?

8Why is a frictionless, undamped oscillation an idealization rather than something observed in the real world?

🚀 Section C · Challenge ● CHALLENGE 2 × 2 = 4

9A clock pendulum has frequency 1 Hz. Find its period.

10Give a real-world example of oscillatory motion.

💭 Reflection — the most useful thing I learned:

A ___/4 B ___/12 C ___/4 Total ___/20 Teacher's Signature Parent's Signature

✂ answer key — fold or cut before handing out

1 = 1/1.5 ≈ 0.67 Hz 2 = 0.04 s 3 = 250 Hz 4 = The central rest position the system oscillates around | 5 = Its inertia carries it past equilibrium, and the restoring force then pulls it back, repeating the cycle 6 = 20 oscillations 7 = Damping 8 = Real systems always experience some energy loss due to friction, air resistance, or other resistive forces | 9 = 1 second 10 = Any valid example, e.g. a swinging pendulum, a vibrating guitar string, or a bouncing spring