Slowly pulling and lifting the pendulum bob of a triple pendulum aside to store energy, and then quickly releasing it, triggers an earthquake/tsunami like event. Such eneraction, the transfer of energy into action, animates and powers our wonderful world.
In the above incident, experience gravity, also called weight at or near sea level, as an equal and opposite pull acting between an object and the earth. Lifting the bob through a distance transfers and stores energy as height, that transfers back into motion. Lifting it twice as far requires twice the energy. Likewise, any push or pull acting through a distance transfers energy. Leverage involves a smaller push acting over a greater distance to accomplish the same thing, a tough task.
Handcrafted from hockey pucks and fishing line, STEM Triple pendulums simply connect together three classical pendulums suspended from an elastic band or pivot tube. The bob consists of two hard rubber disks threaded on a flexible line, and capped with a plastic cup balanced on a pivot post. Like an exciting sports event, experience interacting objects transferring energy into action push and pull on each other to move, flex, bobble, and sense per laws of nature, such as Hooke's law of elasticity, and Newton's laws of motion and gravitation.
Enjoy the live technology involved. Invoking mysterious gravity and transferring mystical energy into action, the Earth pulls on the upper disk to swing it. Swinging sideways from the pivot tube, the upper disk pushes cup and pulls lower disk to follow its motion. Coasting fore and aft, the Earth pulls on all parts, moving them together as one body.
Exercising a triple pendulum, you see interacting objects transferring energy into action, including the Earth and you, push and pull on one another to move, flex, and sense per laws of nature, as properties of materials: elasticity, mass (God particles), friction, and gravity, storing energy in different ways resist or allow moving. Such eneraction, a new word, animates and powers pendulums, your incredible self, and our remarkable world.
Like you, the embedded cup and disk sensors flex to sense changes in motion of the upper disk when swinging sideways from the pivot tube, but not when swinging fore and aft, creating a mystery. They dramatically show that without a transfer of energy, nothing happens, objects don't move, structures don't flex, and sensors don't sense, or change status. More than a billion similar, commercial, inertial sensors help trigger car air bags and stabilize camera images.
Triple pendulums serve as educational, handheld novelties, or as inspirational desktop swings with regulation size hockey pucks having team logos. Simple educational dual pendulum versions do most of the same things, but not as dramatically.
Join our president, legislators, and educators in promoting STEM education: Science, Technology, Engineering, and Mathematics, to help solve our nation's job and debt problems. Employ all four fields of STEM to explain observed pendulum behavior, and to encourage the transfer of personal energy into action benefiting the economy.
Ancient wisdom encourages us to test and model all things, especially pendulums, and retain what is good (1Th5:21). Thank a legion of famous scientists, including Galileo and Newton, for employing pendulums to discover a wealth of practical knowledge about physical realities. Thank Mother Nature for gifts of gravity, abundant energy, and pendulums, but not without extracting her due.
As evidenced above, mysterious gravity and pendulums serve as valuable keys to understanding physical realities, such as the transfer of energy.
With a wealth of varied, exciting experience as a journeyman ironworker, infantry scout (WWII), scholar, engineer, inventor, entrepreneur, and adjunct associate professor, Robert W. (Bob) Lally has authored numerous technical articles and war stories. See http://www.penduplum.com and http//www.ozark.peopling.net for details.
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