Hi guys, I am working on my Physiscs Lab report and I am stuck on this questions.?

Question

I will appreciate your help, and I ned someone to explain me how can I attached some graphs to this questions.
Question 1)
a) What is the constant of the spring?
b) From your graph (force vs. distance), does the spring follow Hooke’s law?
c) Do you think that it would always follow Hooke’s law no matter how far you stretched it?
d) Why is the slope of your graph positive, while Hooke’s law has a minus sign?
Question 2)
Compare the work you measured to stretch the spring to 10 cm, 20 cm, and the maximum stretch to the stored potential energy predicted by this experiment. Should they be similar?
Stretch
10 cm 20 cm Max. Stretch
Integral (during pull) (N∙m) 0.0865 0.25 0.752
∆ PE (J)

Answer 1

Play with reference #3 then

a) graph displacement vs force
b )I don't know since I've not seen your graph, but I think it should fallow

W=-ky
W- weight
k - spring constant
y -displacement
hint k=(W2-W2)/(y2 - y1)

c)Do the experiment and find out.

d)Ha! What do you TINK?


****Send me data*****


Note:
1. you need to take more than three sets of measurements.
2. At some point the spring will no longer return to its original shape (see ref 3) . So pay attention and measure well.

Answer 2

a) Spring constant is a quantity used to describe the 'resistance' a spring provides to a force (which causes it to deform).

For linear springs)
force required to deform the spring = - spring constant * displacement of spring ... eq (1)

The negative sign indicates that this force is a restoring force. It opposes the displacement of the spring and tries to restore the spring state back to equilibrium.

b) A spring would follow Hook's law in the region that eq (1) holds. In other words, relationship between force & displacement are linear.

c) No, Hook's law is an approximation and does not always apply. Materials/ designs that follow Hook's Law do so only till a numerical value of force/displacement. In fact there are springs which are designed to be non linear as well. Do a wikipedia / google search and you will get tons of info.

d) Graph is positive because the larger the displacement of the spring, the more the force that is required to attain this displacement. Negative sign to show that the force is restoring in nature. thats is, it acts in the direction opposing its displacement.

Question 2) Figure it out