Summary AQA A-level Physics notes: Materials

Hooke's Law


-
-
inratee limit F kx =




-
·Force is
proportional to extension.

Applies up
to the limitof
proportionalit
Extension m
Elastic limit -



maximum stress that a material can withstand before the deformat
permanent
plastic
limitof the linear.
proportionality a
pointbeyond
which
graph is no
longer
-




-

Rubber cord-




"
- III
Ill -
work
done


Thermal energy
stretch




Extension Why does exhibit
not
plastic behavi
deform the material No
-energy
to
-




permanentextension
-work done
stretching