Describe Simple Harmonic Motion (SHM) and identify the conditions required for an object to undergo SHM.
Simple Harmonic Motion is oscillatory motion where the restoring force is directly proportional to displacement from equilibrium position and acts in the opposite direction (-kx).
Step-by-Step Solution:
Conditions for SHM:
1. Restoring force ∝ -displacement (F = -kx)
2. Motion must be about a fixed equilibrium position
3. System must be undamped or lightly damped
4. Maximum acceleration occurs at maximum displacement
Verify: Check if equation of motion takes form: a = -(ω²)x
Key Mistake to Avoid: Students often forget that the negative sign in F = -kx is crucial - it indicates the force acts opposite to displacement.
Quick Tip: Remember key examples of SHM (mass-spring system, simple pendulum) and practice deriving the equation of motion for each - examiners frequently test this.
What are the common mistakes students make when drawing force diagrams and ray diagrams in A-Level Physics?
Explain the concept of internal resistance in a power supply and how it affects the terminal potential difference.
How do capacitors work, and what is their role in storing electrical energy in a circuit?
Explain how the properties of a semiconductor can prevent an LED from lighting up in a circuit.
Need help to find a tutor?
Our educational experts will help you find the perfect online tutor from top UK universities.
Download our free study tips
This handbook will help you plan your study time, beat procrastination, memorise the info and get your notes in order.