Two Equal Masses Are Connected by an Ideal Spring and Supported

question 18

Multiple Choice

Two equal masses are connected by an ideal spring and supported in a vertical configuration by only one mass,with the other mass hanging freely.What is the behavior of the bottom mass immediately after the top mass is released?

• A)It moves upwards relative to the ground.
• B)It moved downwards relative to the ground.
• C)It is stationary relative to the ground.
• D)It rotates about the system center of mass.
• E)There is not enough information to tell.

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