Unit: Work & Energy
Year: 1990 Question#: 22
Question: The graph represents the relationship between the force applied to a spring and the elongation fo the spring. What is the spring constant?
(1 ) 20.0 N/M
(2 ) 9.8 N/kg
(3 ) 0.80 NM
(4 ) 0.050 m/N
What is this question really asking?
Explanation by: Adam C.
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Answer 1
20 N/M
CORRECT!!!!!!!
Use the formula: F=KX Pick any point on the graph for numbers. I chose (.8m, 16N)
F=KX
16N=K(.8m)
K=(16N)/(.8m)
K= 20 N/M return to top
Answer 2
9.8 N/kg
INCORRECT
You didn't use the correct formula. Pick any set on the line and use the formula: F=KX return to top
Answer 3
0.80 NM
INCORRECT
You didn't use the correct formula. Pick any set on the line and use the formula: F=KX
return to top
Answer 4
0.050 m/N
INCORRECT
You didn't use the correct formula. Pick any set on the line and use the formula: F=KX return to top
What's this question really asking?
Can you use the correct formula to solve for the spring constant. Also it is asking if you know how to read the data off the graph. return to top
