Hooke's law

Question 1

Hooke’s Law

Answer 1

An elastic material can be extended and compressed but it will return to its original shape once the force has been removed

Question 2

Hooke’s Law Equation

Answer 2

F∝x or F = k*x(extension)
k is the spring constant (a measure of stiffness)

Question 3

shape of a Hookian relationship graph

Answer 3

example of hookian relationship = spring
directly proportional. straight line passing through the origin.
The graph then curves after it reaches the elastic limit
area between 0 and limit of proportionality is equal to total elastic potential energy in joules A = 1/2Fx

Question 4

shape of non-Hookian relationship graph

Answer 4

example = rubber band
it gives us a hysteresis curve which means it shows different trends for loading and unloading
area under loading is the total energy
area under unloading is the useful energy
area between loading and unloading is the thermal energy

Question 5

elastic limit

Answer 5

the point where a spring is unable to return to its original shape. The spring remains deformed after this point.

Question 6

why is thermal energy released when stretching a rubber band

Answer 6

atoms in the rubber are pulled apart. atoms vibrate and increase internal energy transferred to thermal energy.

Question 7

how to set up experiment

Answer 7

two clamps, clamp stand, spring/elastic band, ruler
set ruler to match the top of the spring
measure length of spring first
add weight to spring
measure length of extension using a pen or something flat to measure where the bottom of the spring
repeat and add more weight