AQA A Level Physics复习笔记6.3.2 Free & Forced Oscillations
Free & Forced Oscillations Free Oscillations Free oscillations occur when there is no transfer of energy to or from the surroundings This happens when an oscillating system is displaced ...
AQA A Level Physics复习笔记6.3.1 Damping
Damping In practice, all oscillators eventually stop oscillating Their amplitudes decrease rapidly, or gradually This happens due to resistive forces, such as friction or air resistan...
AQA A Level Physics复习笔记6.2.8 Required Practical: Investigating SHM
Required Practical: Investigating SHM Equipment List Resolution of measuring equipment: Stopwatch = 0.01 s Metre Ruler = 1 mm SHM in a Mass-Spring System The overall aim of this exper...
AQA A Level Physics复习笔记6.2.7 Energy in SHM
Energy in SHM During simple harmonic motion, energy is constantly exchanged between two forms: kinetic and potential The potential energy could be in the form of: Gravitational potential ene...
2023年A-Level考试将迎重大改革！
A-Level考试改革已经传了很久，这一次动真格了！英国学生办公室(OfS)已经制定了一项新的入学制度，该制度可能取消A-Level预估分（predicted result）的使用。取消预估分意味着，学生需要先拿到A-Level实考成绩以...
AQA A Level Physics复习笔记6.2.6 Harmonic Oscillators in Context
Harmonic Oscillators in Context Any oscillations about an equilibrium where its restoring force is proportional to its displacement will be simple harmonic This doesn’t apply just to pendulu...
AQA A Level Physics复习笔记6.2.5 Period of Simple Pendulum
Period of Simple Pendulum A simple pendulum is another type of simple harmonic oscillator The pendulum consists of a string and a bob (a weight, generally spherical) at the end The ti...
AQA A Level Physics复习笔记6.2.4 Period of Mass-Spring System
Period of Mass-Spring System A mass and spring system is a type of simple harmonic oscillator The time period of a mass-spring system is given by: Where: T = time period (s) m = mass (kg) k ...
AQA A Level Physics复习笔记6.2.3 Calculating Maximum Speed & Acceleration
Maximum Speed The speed v of an oscillator will vary in SHM. It is: Maximum at the equilibrium position (x = 0) Zero at the amplitude (x = A) The maximum speed, vmax, is given by the equatio...
