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
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q28: Work-energy theorem: If a force always acts
Q29: Work: A graph of the force on
Q30: Hooke's law: Which of the graphs in
Q31: Work: A crane lifts a 425 kg
Q32: Energy conservation with conservative forces: In the
Q34: Hooke's law: Block A (0.40 kg) and
Q35: Energy conservation with nonconservative forces: Which, if
Q36: Energy conservation with nonconservative forces: A 1.37-kg
Q37: Power: How long will it take a
Q38: Force and potential energy: The potential energy