force and elasticity Flashcards
(14 cards)
wha can forces do
stretch or compress objects causing them to deform
what happens when forces deform an object
energy is transferred
what happens when a spring is stretched
energy is transferred from kinetic energy store to elastic potential energy store
what happens when a spring springs back to its original form
energy is transferred back to a kinetica energy store
what is an elastic object
an object that goes bakc to its original shape and length after forces have been removed
.e.g. a spring
forces are in ____________ when they are balanced
equilibrium
what is the extension of a spring directly proportional to
the force applied
what is the relationship between force and extension
linear
what is the equation to find force
F = K x E
what does the F in the equation to find force
force in Newtons, N
what does K stand for in the equation to find force
K stands for the spring constant in newton metres, N/m
what does the E stand for in the equation to find force
the force applied in metres, m
what objects obey Hooke’s law
springs
the hooke’s law only works for up to a certain force. True or False
True
