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<

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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Linh Đan 3 years 2021-08-22T05:26:53+00:00 1 Answers 8 views 0

Answers ( )

  1. Euphemia
    0
    2021-08-22T05:28:41+00:00
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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

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