A Spring Is Fixed Vertically to the Floor

question 25

Multiple Choice

A spring is fixed vertically to the floor.A 10.0-kg box is then pressed down such that the spring is compressed 0.5 m beyond its equilibrium length.The box is then released and it travels vertically upward to a maximum height of 2.40 m above its release point.Assuming the work done against drag (air resistance) is 120 J,what is the spring constant of the spring?

• A)2500 N/m
• B)3750 N/m
• C)1880 N/m
• D)3600 N/m
• E)2840 N/m

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