CIE A Level Physics复习笔记17.2.1 Damping
Damping In practice, all oscillators eventually stop oscillating Their amplitudes decrease rapidly, or gradually This happens due to resistive forces, such friction or air resistance, which act in ...
CIE A Level Physics复习笔记17.1.6 Energy in SHM
Kinetic & Potential Energies During simple harmonic motion, energy is constantly exchanged between two forms: kinetic and potential The potential energy could be in the form of: Gravitational p...
CIE A Level Physics复习笔记17.1.5 SHM Graphs
SHM Graphs The displacement, velocity and acceleration of an object in simple harmonic motion can be represented by graphs against time All undamped SHM graphs are represented by periodic functions...
CIE A Level Physics复习笔记17.1.4 Calculating Speed in SHM
Calculating Speed of an Oscillator The speed of an object in simple harmonic motion varies as it oscillates back and forth Its speed is the magnitude of its velocity The greatest speed of an oscill...
CIE A Level Physics复习笔记17.1.3 Calculating Acceleration & Displacement in SHM
Acceleration & Displacement of an Oscillator The acceleration of an object oscillating in simple harmonic motion is: a = −⍵2x Where: a = acceleration (m s-2) ⍵ = angular frequency (rad s-1) x =...
CIE A Level Physics复习笔记17.1.2 Simple Harmonic Motion
Conditions for Simple Harmonic Motion Simple harmonic motion (SHM) is a specific type of oscillation SHM is defined as: A type of oscillation in which the acceleration of a body is proportional to ...
CIE A Level Physics复习笔记17.1.1 Describing Oscillations
Describing Oscillations An oscillation is defined as: Repeated back and forth movements on either side of any equilibrium position When the object stops oscillating, it returns to its equilibrium p...
CIE A Level Physics复习笔记16.1.3 The First Law of Thermodynamics
The First Law of Thermodynamics The first law of thermodynamics is based on the principle of conservation of energy When energy is put into a gas by heating it or doing work on it, its internal ene...
CIE A Level Physics复习笔记16.1.2 Work Done by a Gas
Work Done by a Gas When a gas expands, it does work on its surroundings by exerting pressure on the walls of the container it's in This is important, for example, in a steam engine where expanding ...
