hooke's Law

Question 1

state hooke’s law

Answer 1

the force needed to stretch a spring is directly proportional to the extension of the spring from its natural natural.

Question 2

what does a graph look like for an object obeying hooke’s law

Answer 2

force on y-axis
extension on x-axis
goes through origin
straight line

Question 3

what’s the equation for hooke’s law?

Answer 3

f=kx

where k is the spring constant which is different for each material.

Question 4

what is the area under a force extension graph?

Answer 4

the amount of elastic potential energy stored in the spring

Question 5

what is the units for the spring constant k?

Answer 5

N/m

Question 6

what does the gradient of a force extension graph give us? what does the steepness relate to?

Answer 6

the gradient is the spring constant- the stiffness of the material of the spring.
the smaller the force needed for a large extension means lower gradient= less stiff

Question 7

if 2 identical springs a and b are connected in series, what happens when weight is added compared to just a?

Answer 7

k constant is halved. half the force is needed for the same extension
it becomes stretchier

Question 8

give the equation for springs in series

Answer 8

1/K(total)= 1/K(A) + 1/K(B)

Question 9

equation for springs in parallel?

Answer 9

K(total)= K(A) +K(B)