week 12

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Lab Report                                                    Name: ____________________

 

                                                                                    Section: ___________________

 

EXPERIMENT: Hooke’s Law

 

DATA TABLE 1:  Spring 1

 

  NOTE: Accumulated elongation is the total distance from the reference point, not the sum of increments. 

 

Force (N)

Accumulated  (cm) Elongation (stretch)

Accumulated (m) Elongation (stretch)

Elastic PE

(Joules)

Data Point 1

 

 

 

 

Data Point 2

 

 

 

 

Data Point 3

 

 

 

 

Data Point 4

 

 

 

 

Data Point 5

 

 

 

 

Data Point 6

 

 

 

 

Data Point 7

 

 

 

 

Data Point 8

 

 

 

 

Data Point 9

 

 

 

 

Data Point 10

 

 

 

 

 

DATA TABLE 2:  Spring 2

 

  NOTE: Accumulated elongation is the total distance from the reference point, not the sum of increments. 

 

Force (N)

Accumulated  (cm) Elongation (stretch)

Accumulated (m) Elongation (stretch)

Elastic PE

(Joules)

Data Point 1

 

 

 

 

Data Point 2

 

 

 

 

Data Point 3

 

 

 

 

Data Point 4

 

 

 

 

Data Point 5

 

 

 

 

Data Point 6

 

 

 

 

Data Point 7

 

 

 

 

Data Point 8

 

 

 

 

Data Point 9

 

 

 

 

Data Point 10

 

 

 

 

 

 

DATA TABLE 3:  Rubber band

 

  NOTE: Accumulated elongation is the total distance from the reference point, not the sum of increments. 

 

Force (N)

Accumulated  (cm) Elongation (stretch)

Accumulated (m) Elongation (stretch)

Elastic PE

(Joules)

Data Point 1

 

 

 

 

Data Point 2

 

 

 

 

Data Point 3

 

 

 

 

Data Point 4

 

 

 

 

Data Point 5

 

 

 

 

Data Point 6

 

 

 

 

Data Point 7

 

 

 

 

Data Point 8

 

 

 

 

Data Point 9

 

 

 

 

Data Point 10

 

 

 

 

 

 

Questions:

 

A.    How does the relative stiffness of a spring relate to its spring constant?

 

B.     How does PE change relative to the stretch of the spring?

 

C.     Indicate on your graph for the rubber band where the linear behavior stops. What does this mean?

 

D.    Which is stronger in the region where Hooke’s law is obeyed, the spring or the rubber band? Explain.

 

E.     Explain what happens to the "spring constant" of the rubber band for the non-linear part of your curve.

 

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