An ideal spring hangs from the ceiling. A 1.45 kg mass is hung from the spring, stretching the spring a distance ᵅ = 0.0855 m from its original length when it reaches equilibrium. The mass is then lifted up a distance ᵃ = 0.0285 m from the equilibrium position and released. What is the kinetic energy of the mass at the instant it passes back through the equilibrium position

Inquiry into Physics
8th Edition
ISBN:9781337515863
Author:Ostdiek
Publisher:Ostdiek
Chapter2: Newton's Laws
Section: Chapter Questions
Problem 28P: . A mass of 0.75 kg is attached to a relaxed spring with k = 2.5 N/m. The mass rests on a...
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An ideal spring hangs from
the ceiling. A 1.45 kg mass is
hung from the spring,
stretching the spring a
distance
ᵅ = 0.0855 m from
its original length when it
reaches equilibrium. The
mass is then lifted up a
distance
ᵃ = 0.0285 m from
the equilibrium position and
released. What is the kinetic
energy of the mass at the
instant it passes back through
the equilibrium position?

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