Laws of MotionHard
Question
A spring has an equilibrium length of 2.0 meters and a spring constant of 10 newtons/meter. Alice is pulling on one end of the spring with a force of 3.0 newtons. Bob is pulling on the opposite end of the spring with a force of 3.0 newtons in the opposite direction. What is the resulting length of the spring ?
Options
A.1.7 m
B.2.0 m
C.2.3 m
D.2.6 m
Solution
extension x = 
= 0.3
l′ = l + x = 2 + 0.3 = 2.3 m
= 0.3l′ = l + x = 2 + 0.3 = 2.3 m
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