Conceptual Dynamics - Independent Learning
«Previous
Next »
Potential Energy - Example 7.5-2
Consider a spring that is being stretched as shown in the figure.
What is the work done by
F
s
= kx
as it moves the spring from position 1 to 2?
U
1-2
= ∫F
s
dx = ∫kx dx = (1/2)k Δx
U
1-2
= ∫F
s
dx = ∫kx dx = k Δx
2
U
1-2
= ∫F
s
dx = ∫kx dx = (1/2)k Δx
2
If the elastic potential energy is the spring’s ability to do work, then what is the elastic potential energy of the spring at position 2?
V
e
= (1/2)k Δx
2
V
e
= k Δx
V
e
= 0
«Previous
Next »
