Edexcel A Level Physics:复习笔记4.10 Elastic Strain Energy
Area Under a Force-Extension Graph For a material which obeys Hooke's law, the elastic strain energy, Eel can be determined by finding the area under the force-extension graph Since this are...
Edexcel A Level Physics:复习笔记4.9 Core Practical 5: Investigating Young Modulus
Core Practical 5: Investigating Young Modulus of a Material To measure the Young Modulus of a metal in the form of a wire requires a clamped horizontal wire over a pulley (or vertical wire a...
Edexcel A Level Physics:复习笔记4.8 Stress-Strain Graphs
Stress-Strain Graphs Stress-strain curves give an indication of the properties of materials such as Up to what stress and strain they obey Hooke's Law Whether they exhibit elastic and/or pla...
Edexcel A Level Physics:复习笔记4.7 Force-Extension Graphs
Force-Extension Graphs The way a material responds to a tensile or compressive force can be shown on a force-extension, or a force-compression graph Although compression can be put into equa...
Edexcel A Level Physics:复习笔记4.6 Stress, Strain & The Young Modulus
Stress & Strain Stress Stress is the applied force per unit cross sectional area of a material Forces can be; Tensile forces, which pull on an object and extend it Compressive forces, which pus...
Edexcel A Level Physics:复习笔记4.5 Hooke's Law
Hooke's Law When a force F is added to the bottom of a vertical metal wire of length L, the wire stretches A material obeys Hooke’s Law if: The extension of the material is directly proportional to...
Edexcel A Level Physics:复习笔记4.4 Core Practical 4: Investigating Viscosity
Core Practical 4: Investigating Viscosity of a Liquid Aim of the Experiment By allowing small spherical objects of known weight to fall through a fluid until they reach terminal velocity, the visco...
Edexcel A Level Physics:复习笔记4.3 Viscous Drag
Stoke's Law Viscous Drag Viscous drag is defined as the frictional force between an object and a fluid which opposes the the motion between the object and the fluid Viscous drag is calculated using...
Edexcel A Level Physics:复习笔记4.2 Upthrust
Upthrust Archimedes' Principle Archimedes’ principle states: An object submerged in a fluid at rest has an upward buoyancy force (upthrust) equal to the weight of the fluid displaced by the object ...
