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
Simple harmonic motion
Simple harmonic motion is a type of periodic motion in which an object undergoes oscillatory motion. The restoring force exerted by the object exhibiting SHM is proportional to the displacement from the equilibrium position. The force is directed towards the mean position. We see many examples of SHM around us, common ones are the motion of a pendulum, spring and vibration of strings in musical instruments, and so on.
Simple Pendulum
A simple pendulum comprises a heavy mass (called bob) attached to one end of the weightless and flexible string.
Oscillation
In Physics, oscillation means a repetitive motion that happens in a variation with respect to time. There is usually a central value, where the object would be at rest. Additionally, there are two or more positions between which the repetitive motion takes place. In mathematics, oscillations can also be described as vibrations. The most common examples of oscillation that is seen in daily lives include the alternating current (AC) or the motion of a moving pendulum.
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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