Question: A 10-lb collar rests on but is not attached to the spring shown. It is observed that when the collar is pushed down 9 in.

A 10-lb collar rests on but is not attached to the spring shown. It is observed that when the collar is pushed down 9 in. or more and released, it loses contact with the spring. Determine

(a) The spring constant,

(b) The position, velocity, and acceleration of the collar 0.16 s after it has been pushed down 9 in. and released.

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