A force of 10N is required to stretch a spring from 20cm to 25cm. What is the spring constant in N/m2 Be careful of unit
A) 0.005 N/m
B) 0.40 N/m
C) 40 N/m
D) 200 N/m
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Question
A force of 10N is required to stretch a spring from 20cm to 25cm. What is the spring constant in N/m2 Be careful of unit
A) 0.005 N/m
B) 0.40 N/m
C) 40 N/m
D) 200 N/m
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Answer:
C) 40 N/m
Explanation:
If we ASSUME that the spring is un-stretched at the zero cm position
k = F/Δx = 10/0.25 = 40 N/m