A 5-kg collar A is at rest on top of, but not attached to, a spring with stiffness k, - 400 N/m when a constant 150-N force is applied to the cable. Knowing A has a speed of I m/s when the upper spring compressed 75 mm, determine the spring stiffness k. Ignore fric tion and the mass of the pulley. is

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A 5-kg collar A is at rest on top of, but not attached to, a spring
with stiffness k, - 400 N/m when a constant 150-N force is applied
to the cable. Knowing A has a speed of I m/s when the upper spring
compressed 75 mm, determine the spring stiffness k. Ignore fric
tion and the mass of the pulley.
is
Transcribed Image Text:A 5-kg collar A is at rest on top of, but not attached to, a spring with stiffness k, - 400 N/m when a constant 150-N force is applied to the cable. Knowing A has a speed of I m/s when the upper spring compressed 75 mm, determine the spring stiffness k. Ignore fric tion and the mass of the pulley. is
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