force and elasticity Flashcards
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
