Work Done by Variable Forces: It Requires 49 J of Work

question 33

Multiple Choice

Work done by variable forces: It requires 49 J of work to stretch an ideal very light spring from a length of 1.4 m to a length of 2.9 m. What is the value of the spring constant of this spring?

• A) 15 N/m
• B) 44 N/m
• C) 29 N/m
• D) 22 N/m

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