Materials Flashcards
Hookes law
The extension of the spring is directly proportional to the force applied. This is true as the elastic limit of the spring is not exceeded
What does the force constant measure
The measure of stiffness of a spring
How do you reduce parallax errors when taking reading
Take readings at eye level
What energy transfer happens when you extend a rubber band
The work done applied to the spring gets transferred into the elastic potential energy of the spring when its stretched or compressed
Can the work done on a spring be fully recovered
Only if the string has been stretched before its elastic limit
what is the spring constant for springs in series
1/K = 1/K1 + 1/K2
what is the spring constant for springs in parallel
K = K1 + K2
how to identify spring constant through experiment
gather necessary data, plot force extension graph and calculate gradeint
what is the UTS
the maximum stress a material can take
what is elastic potential energy
the energy stored in a stretched material
what is the realtionship between stress and strain in a material
they are directly proportional to each other up to the limit of proportionality
how can the young modulus be found
do experiment, calculate stress and strain
plot a stress strain graph, calculate the gradient which will the the young modulus
