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Does a slinky toy spring walking down stairs require energy or release energy?
Peggyann1975
The "slinky toy walking down the stairs" requires an initial impetus or push (a gain in inertial energy) from the user, then it both gains and releases gravitational and inertial energy during the remainder of it's 'walk'. There is no free lunch with energetic systems (whether we discuss a 'slinky' or the expansion of the universe); An initial source of energy must be present and must be imparted to the system for the system to do work. Simply dropping a ball from your hand and observing it impact the ground requires, at a minimum, the gravitational potential energy of the earth imparted to the ball.
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energy that is stored in the spring when it is compressed.energy is stored in the spring when it is stretched.
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The Slinky, like all objects, tends to resist change in its motion. Because of this inertia, if it were placed at the top of the stairs it would stay at rest without moving at all. At this point it has potential or stored energy. But once it is started down the stairs and gravity affects it, the potential energy is converted to the energy of motion or kinetic energy and the Slinky gracefully tumbles coil by coil down the stairs.The physical properties of the slinky determine how quickly it moves under the influence of gravity. Although its movement may look simple, from a scientific point of view the motion is quite complex. As the slinky moves down the steps, energy is transferred along its length in a longitudinal or compressional wave, which resembles a sound wave that travels through a substance by transferring a pulse of energy to the next molecule. How quickly the wave moves depends on the spring constant and the mass of the metal. Other factors, such as the length of the slinky, the diameter of the coils and the height of the step must be considered to completely understand why a slinky moves as it does.
How does a slinky work?
The Slinky, like all objects, tends to resist change in its motion. Because of this inertia, if it were placed at the top of the stairs it would stay at rest without moving at all. At this point it has potential or stored energy. But once it is started down the stairs and gravity affects it, the potential energy is converted to the energy of motion or kinetic energy and the Slinky gracefully tumbles coil by coil down the stairs.The physical properties of the slinky determine how quickly it moves under the influence of gravity. Although its movement may look simple, from a scientific point of view the motion is quite complex. As the slinky moves down the steps, energy is transferred along its length in a longitudinal or compressional wave, which resembles a sound wave that travels through a substance by transferring a pulse of energy to the next molecule. How quickly the wave moves depends on the spring constant and the mass of the metal. Other factors, such as the length of the slinky, the diameter of the coils and the height of the step must be considered to completely understand why a slinky moves as it does.
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Slinky! No, seriously. A slinky at the top of the stairs has POTENTIAL energy, a slinky falling down the stairs has KINETIC energy. Things with the potential to release energy have POTENTIAL energy. Things currently releasing that energy have KINETIC energy. Of course, it could also be a block of uranium, and it's got energy no matter what it's doing. Or it could be a chunk of wood sitting there, it's got thermal & light energy stored inside it, which would be released by rapid oxidization (burning).
