null
US
Entrar
Registre-se gratuitamente
Registre-se
Detectamos que o JavaScript não está habilitado no teu navegador. Habilite o Javascript para o funcionamento correto do nosso site. Por favor, leia os
Termos e Condições
para mais informações.
Próximo
Copiar e Editar
Você deve estar logado para concluir esta ação!
Inscreva-se gratuitamente
559821
Solids
Descrição
A Levels Physics Mapa Mental sobre Solids, criado por luisnorth em 18-02-2014.
Sem etiquetas
a levels
physics
physics
a levels
Mapa Mental por
luisnorth
, atualizado more than 1 year ago
Mais
Menos
Criado por
luisnorth
aproximadamente 10 anos atrás
36
0
0
Resumo de Recurso
Solids
Density
Density= m/v
ρ
Mass per unit volume
Springs
Hooke's Law
Extension applied is directly proportional to the load applied
Providing the limit of proportionality is not exceeded!
ΔL ∝ F
F=KΔL
K= Spring constant in n/m
Some materials do not obey, eg. rubber
Young's Modulus
Tensile Stress
The perpendicular force applied per unit cross-sectional area
Tensile Stress = F/A
Pa or N/m^2
Tensile Strain
Extension produced per unit original length
No units
ΔL/L
Ratio of tensile stress applied to tensile strain produced
Pa or N/m^2
E or Y
Stress- Strain graph
Gradient = E
Area underneath = Strain energy per unit volume
Force-Extension Graphs
F= EA/L ΔL
EA/l = gradient
E = gradient * l / A
Energy Stored
Work Done = Force x Distance
FΔs = Area under graph
= 1/2 b x h
= 1/2 ΔL x F
= 1/2 F ΔL
Energy Stored = Work Done
1/2 F ΔL
Key Terms
Limit of proportionality- The point beyond which Hooke's law is no longer obeyed
Elastic behaviour- Original size & shape is regained after force is removed
Plastic Behaviour- Some permanent deformation when force is removed
Elastic Limit - The maximum amount of stretch whilst still regaining original size and shape when force removed
Yield Point- The point at which the material 'gives' a little. There is a marked increase in extension due to crystal planes sliding across eachother
Ultimate Tensile Strength - The maximum tensile stress that can be applied to a material without it breaking
Stiff - Very little deformation when a force is applied
Brittle - Very stiff and breaks with hardly any plastic deformation
Fracture - Cracks appear on the surface of the solid when a force is applied causing it to break
Ductile - Shows plastic deformation
Quer criar seus próprios
Mapas Mentais
gratuitos
com a GoConqr?
Saiba mais
.
Semelhante
AQA Physics P1 Quiz
Bella Statham
GCSE AQA Physics - Unit 3
James Jolliffe
Using GoConqr to study science
Sarah Egan
GCSE AQA Physics 1 Energy & Efficiency
Lilac Potato
Waves
kate.siena
Forces and their effects
kate.siena
Junior Cert Physics formulas
Sarah Egan
Forces and motion
Catarina Borges
OCR Physics P4 Revision
Dan Allibone
P2 Radioactivity and Stars
dfreeman
Physics 1A - Energy
Zaki Rizvi
Explore a Biblioteca